Science - Grade 8 (C ...
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 11 Force and Pressure, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 11 Force and Pressure, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 11 Force and Pressure Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Force and Pressure class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 11 Force and Pressure, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q&Ans, Learn 8th grade science, Chapter 11 Force and Pressure, NCERT Solutions for Class 8th Science Chapter 11 Force and Pressure, CBSE Class 8 Science Chapter 11 - Force and Pressure, Chapter 11 Force and Pressure class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 11- Force and Pressure- Questions and Answers/Notes/Worksheets – 1 Tags: Class VIII - Force and Pressure, CBSE Grade 8 Science Force and Pressure, Science - Class 8- Force and Pressure, NCERT Solutions for Class 8th: Ch 11 Force and Pressure, Class 8 CBSE Science Force and Pressure, CBSE class 8 science Force and Pressure, Grade 8 –Science - CBSE / NCERT – Force and Pressure Question Bank for eighth class, Question and Answers free worksheet PDF on Force and Pressure, Practice page and Important question and Extra question on Force and Pressure for eighth standard, State true and false, Fill in the blanks on Force and Pressure for 8th standard, What is the unit of force? Give one example where force moves a stationary object. Give one example where force stops a moving object. What is force? Does liquid exert pressure in all directions? Why does the shape of tooth paste tube change when we squeeze it? What can bring change in state of motion of an object? Which force can be used to gather iron pins scattered on the floor? Which force do the animals apply while moving, chewing and doing other activities? Which force is responsible for raising our body hair when we try to take off a terylene or polyester shirt in the dry weather? Write one example where force changes the speed of a moving object. Why does a boat come to rest when we stop rowing it? Write any two application of atmospheric pressure in our everyday life. Explain why, snow shoes stop you from sinking into snow. What happens to the springs fixed to the seat of a bicycle when we sit on it? Give one practical application of magnetic force. Give one example from daily life where force changes the shape of an object.Page: 1 Files: 3
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 11 Force and Pressure, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 11 Force and Pressure, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 11 Force and Pressure Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Force and Pressure class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 11 Force and Pressure, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q&Ans, Learn 8th grade science, Chapter 11 Force and Pressure, NCERT Solutions for Class 8th Science Chapter 11 Force and Pressure, CBSE Class 8 Science Chapter 11 - Force and Pressure, Chapter 11 Force and Pressure class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 11- Force and Pressure- Questions and Answers/Notes/Worksheets – 1 Tags: Class VIII - Force and Pressure, CBSE Grade 8 Science Force and Pressure, Science - Class 8- Force and Pressure, NCERT Solutions for Class 8th: Ch 11 Force and Pressure, Class 8 CBSE Science Force and Pressure, CBSE class 8 science Force and Pressure, Grade 8 –Science - CBSE / NCERT – Force and Pressure Question Bank for eighth class, Question and Answers free worksheet PDF on Force and Pressure, Practice page and Important question and Extra question on Force and Pressure for eighth standard, Why do balloons expand when filled with air? Why does the balloon get inflated? What makes a balloon get inflated when air is filled in it? Explain why, a wide steel belt is provided over the wheels of an army tank. What is pressure? Which force makes a rolling ball stop on its own? Why a ball rolling along the ground gradually slows down and finally comes to rest? What makes a ball to stop when it is rolling? Why does a moving ball stop? What is muscular force? Give one example. What is described as a change in its state of motion? What is meant by a contact force? Give an example. Explain, why magnetic force is said to be a non-contact force. Why do the shape and size of balloon change when filled with air or water? Why water comes out more slowly from an upstairs tap than from a similar tap downstairs? Why are we not crushed by atmospheric pressure? If the pressure due to atmosphere is so great, then why are we not crushed by it?Page: 1 Files: 3
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 11 Force and Pressure, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 11 Force and Pressure, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 11 Force and Pressure Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Force and Pressure class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 11 Force and Pressure, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q&Ans, Learn 8th grade science, Chapter 11 Force and Pressure, NCERT Solutions for Class 8th Science Chapter 11 Force and Pressure, CBSE Class 8 Science Chapter 11 - Force and Pressure, Chapter 11 Force and Pressure class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 11- Force and Pressure- Questions and Answers/Notes/Worksheets – 1 Tags: Class VIII - Force and Pressure, CBSE Grade 8 Science Force and Pressure, Science - Class 8- Force and Pressure, NCERT Solutions for Class 8th: Ch 11 Force and Pressure, Class 8 CBSE Science Force and Pressure, CBSE class 8 science Force and Pressure, Grade 8 –Science - CBSE / NCERT – Force and Pressure Question Bank for eighth class, Question and Answers free worksheet PDF on Force and Pressure, Practice page and Important question and Extra question on Force and Pressure for eighth standard, What do you understand by state of Motion? Why the tools meant for cutting and piercing always have sharp edges? Explain why, the tip of a sewing needle is sharp. “When a ball is dropped from a height, its speed increases gradually.” Name the force which causes this change in speed. Explain why, porters place a thick, round piece of cloth on their heads when they have to carry heavy loads. Explain now why shoulder bags are provided with broad straps and not thin strap? Why the straps of school bags are made broader? Why is it comfortable to lift a school bag with broad straps than thin straps? A small device pulls iron nails from a distance. Which type of force is involved in this process? Write one example where force changes the direction of a moving object. Explain why, frictional force is said to be a contact force. In a tug of war; when the two teams are pulling the rope, a stage comes when the rope does not move to either side at all. What can you say about the magnitudes and directions of the forces being applied to the rope by the two teams at this stage? Explain why the walls of a dam are thicker near the bottom than at the top. Give three examples of non-contact forces. A rocket has been fired upwards to launch a satellite in its orbit. Name the two forces acting on the rocket immediately after leaving the launching pad. What is meant by gravitational force (or force of gravity)? Give its one example.Page: 1 Files: 3
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 11 Force and Pressure, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 11 Force and Pressure, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 11 Force and Pressure Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Force and Pressure class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 11 Force and Pressure, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q&Ans, Learn 8th grade science, Chapter 11 Force and Pressure, NCERT Solutions for Class 8th Science Chapter 11 Force and Pressure, CBSE Class 8 Science Chapter 11 - Force and Pressure, Chapter 11 Force and Pressure class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 11- Force and Pressure- Questions and Answers/Notes/Worksheets – 1 Tags: Class VIII - Force and Pressure, CBSE Grade 8 Science Force and Pressure, Science - Class 8- Force and Pressure, NCERT Solutions for Class 8th: Ch 11 Force and Pressure, Class 8 CBSE Science Force and Pressure, CBSE class 8 science Force and Pressure, Grade 8 –Science - CBSE / NCERT – Force and Pressure Question Bank for eighth class, Question and Answers free worksheet PDF on Force and Pressure, Practice page and Important question and Extra question on Force and Pressure for eighth standard, Give two examples of situations in which applied force causes a change in the shape of an object. What are the various effects of force? Why a fountain of water is created at the leaking joints or holes of pipes of the main water supply line? Why does the liquid rise in a syringe when its piston is pulled up? How does a liquid medicine enter a syringe? Why nose bleeding occurs at high altitudes? Why do mountaineers suffer from nose bleeding at high altitudes? Does application of a force would always result in a change in the state of motion of the object? Name the forces acting on a plastic bucket containing water held above ground level in your hand. Discuss why the forces acting on the bucket do not bring a change in its state of motion. Why atmospheric pressure decreases as we go higher up above the earth's surface? What happens when a charged plastic straw is brought near another uncharged plastic straw? Why does a plastic comb rubbed with dry hair attract tiny pieces of paper? What is meant by saying that force is due to interaction?Page: 1 Files: 3
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 11 Force and Pressure, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 11 Force and Pressure, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 11 Force and Pressure Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Force and Pressure class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 11 Force and Pressure, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q&Ans, Learn 8th grade science, Chapter 11 Force and Pressure, NCERT Solutions for Class 8th Science Chapter 11 Force and Pressure, CBSE Class 8 Science Chapter 11 - Force and Pressure, Chapter 11 Force and Pressure class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 11- Force and Pressure- Questions and Answers/Notes/Worksheets – 1 Tags: Class VIII - Force and Pressure, CBSE Grade 8 Science Force and Pressure, Science - Class 8- Force and Pressure, NCERT Solutions for Class 8th: Ch 11 Force and Pressure, Class 8 CBSE Science Force and Pressure, CBSE class 8 science Force and Pressure, Grade 8 –Science - CBSE / NCERT – Force and Pressure Question Bank for eighth class, Question and Answers free worksheet PDF on Force and Pressure, Practice page and Important question and Extra question on Force and Pressure for eighth standard, If the area of my head were 10 cm × 10 cm, how much weight of air would I be carrying on my head? Why don't we feel the weight of such a huge amount of air on us? If a vacuum is created between two Magdeburg hemispheres joined together, they cannot be separated easily. Give reason. Why do Magdeburg hemispheres stick together? How does a rubber sucker work? Identify the actions involved in the following situations as push or pull, or both: a. Opening a drawer. _______ b. A cricket ball hit by a batsman. ________ c. Drawing a bucket of water from a well. ________ d. Moving a book placed on a table. _________ e. A football player taking a penalty corner. _________ f. Moving a wheel barrow. ________ Q66. Give two examples each of situations in which you push or pull to change the state of motion of objects. Q67. When we press the bulb of a dropper with its nozzle kept in water, air in the dropper is seen to escape in the form of bubbles. Once we release the pressure on the bulb, water gets filled in the dropper. The rise of water in the dropper is due to (a) pressure of water (b) gravity of the earth (c) shape of rubber bulb (d) atmospheric pressure. Q68. Name the type of forces involved in the following: a. A horse pulling a cart. ____________________ b. Moving a loaded cart. ____________________ c. A sticker attached to steel almirah without glue. __________________ d. A coin falling to the ground on slipping from hand. _________________ e. A plastic comb rubbed in dry hair picking up tiny pieces of paper. _____________________ f. A moving boat coming to rest when rowing is stopped. _______________ An inflated balloon was pressed against a wall after it has been rubbed with a piece of synthetic cloth. It was found that the balloon sticks to the wall. What force might be responsible for the attraction between the balloon and the wall? Explain why, when a person stands on a cushion, the depression is much more than when he lies down on it. An archer stretches her bow while taking aim at the target. She then releases the arrow, which begins to move towards the target. Based on this information fill up the gaps in the following statements using the following terms: muscular, contact, non-contact, gravity, friction, shape, attraction (a) To stretch the bow, the archer applies a force that causes a change in its ___________. (b) The force applied by the archer to stretch the bow is an example of ______________________ force. (c) The type of force responsible for a change in the state of motion of the arrow is an example of a _______________ force. (d) While the arrow moves towards its target, the forces acting on it are due to ___________ and that due to ___________ of air. In the following situations identify the agent exerting the force and the object on which it acts. State the effect of the force in each case. (a) Squeezing a piece of lemon between the fingers to extract its juice. (b) Taking out paste from a toothpaste tube. (c) A load suspended from a spring while its other end is on a hook fixed to a wall. (d) An athlete making a high jump to clear the bar at a certain height.Page: 1 Files: 4
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 12 Friction, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 12 Friction, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 12 Friction Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Friction class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 12 Friction, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q&Ans, Learn 8th grade science, Chapter 12 Friction, NCERT Solutions for Class 8th Science Chapter 12 Friction, CBSE Class 8 Science Chapter 12 - Friction, Chapter 12 Friction class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 12- Friction - Questions and Answers/Notes/Worksheets – 1 Tags: Class VIII - Friction, CBSE Grade 8 Science Friction, Science - Class 8- Friction, NCERT Solutions for Class 8th: Ch 12 Friction, Class 8 CBSE Science Friction, CBSE class 8 science Friction, Grade 8 –Science - CBSE / NCERT – Friction Question Bank for eighth class, Question and Answers free worksheet PDF on Friction, Practice page and Important question and Extra question on Friction for eighth standard, State true and false, Fill in the blanks on Friction for 8th standard, Which force helps things to move and stop? What enables a ladder to lean against the wall? Name two common lubricants. Mention one simple method of reducing friction between two surfaces. What is drag? Which type of surface produces less friction? Why the soles of our shoes wear out gradually? Which type of surface produces more friction? Why ball bearings are used in machines? What is the purpose of using ball bearing in machine? Write any two machines in which ball bearings are used. What makes the steps of foot over-bridges at Railway Stations to wear out slowly? What are lubricants? Why do we sprinkle fine powder on the carrom board? Name the force responsible for wearing out of car tyres. What is the direction of force of friction acting on a moving object? What is the direction of force of friction? Which force always opposes motion? What is the force that always opposes motion? What is done to increase friction between the tyres and road? When does static friction come into play? When does sliding friction come into play? Why is the surface of a slide polished to make it smooth? Why do kabaddi players rub their hands with dry soil?Page: 1 Files: 3
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 12 Friction, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 12 Friction, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 12 Friction Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Friction class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 12 Friction, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q&Ans, Learn 8th grade science, Chapter 12 Friction, NCERT Solutions for Class 8th Science Chapter 12 Friction, CBSE Class 8 Science Chapter 12 - Friction, Chapter 12 Friction class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 12- Friction - Questions and Answers/Notes/Worksheets – 1 Tags: Class VIII - Friction, CBSE Grade 8 Science Friction, Science - Class 8- Friction, NCERT Solutions for Class 8th: Ch 12 Friction, Class 8 CBSE Science Friction, CBSE class 8 science Friction, Grade 8 –Science - CBSE / NCERT – Friction Question Bank for eighth class, Question and Answers free worksheet PDF on Friction, Practice page and Important question and Extra question on Friction for eighth standard, Which type of friction comes into play when a book on cylindrical pencils is moved by pushing? Name the device which is attached to heavy luggage (such as a heavy suitcase) to move it easily by pulling. Give one example from everyday life where wheels (or rollers) are used to reduce friction. Why a bicycle and a motor mechanic use grease between the moving parts of these machines? Why are cars, aeroplanes and rockets streamlined? What prevents us from slipping every time we take a step forward? Why are treads made in the surface of tyres? What are fluids? Name two common fluids. Why do gymnasts apply a coarse substance to their hands? Why is it difficult to climb up an oily or greasy pole? Why do tyres of cars wear out gradually? What is static friction? What is sliding friction? What is rolling friction? Why is it difficult to walk on a well-polished floor? Why is it difficult to walk on a smooth and wet floor? Can we reduce friction to zero by polishing surfaces or using large amount of lubricants? Which device is used between the hubs and axles of bicycle wheels to reduce friction? What happens when you rub your hands vigorously for a few seconds? Why does this happen? Explain why sportsmen use shoes with spikes.Page: 1 Files: 3
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 12 Friction, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 12 Friction, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 12 Friction Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Friction class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 12 Friction, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q&Ans, Learn 8th grade science, Chapter 12 Friction, NCERT Solutions for Class 8th Science Chapter 12 Friction, CBSE Class 8 Science Chapter 12 - Friction, Chapter 12 Friction class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 12- Friction - Questions and Answers/Notes/Worksheets – 1 Tags: Class VIII - Friction, CBSE Grade 8 Science Friction, Science - Class 8- Friction, NCERT Solutions for Class 8th: Ch 12 Friction, Class 8 CBSE Science Friction, CBSE class 8 science Friction, Grade 8 –Science - CBSE / NCERT – Friction Question Bank for eighth class, Question and Answers free worksheet PDF on Friction, Practice page and Important question and Extra question on Friction for eighth standard, Why do we slip when we step on a banana peel? Why the sole of our shoes is grooved? Why do car wheels often spin on icy roads? Why a pencil eraser loses tiny pieces of rubber each time we use it? Why a vehicle slows down when brakes are applied? Why it is convenient to pull the luggages fitted with rollers? Even a child can pull attaches and other pieces of luggage fitted with rollers. Why is it so? What enables us to fix nails in a wall and knots to be tied? What is a spring balance? How does a bicycle stop when its brakes are applied? When we strike a matchstick against the rough surface, it catches fire. Give reason. Suppose your writing desk is tilted a little. A book kept on it starts sliding down. Show the direction of frictional force acting on it. How lubricants work? Explain why the sliding friction is less than the static friction.Page: 1 Files: 3
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 12 Friction, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 12 Friction, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 12 Friction Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Friction class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 12 Friction, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q&Ans, Learn 8th grade science, Chapter 12 Friction, NCERT Solutions for Class 8th Science Chapter 12 Friction, CBSE Class 8 Science Chapter 12 - Friction, Chapter 12 Friction class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 12- Friction - Questions and Answers/Notes/Worksheets – 1 Tags: Class VIII - Friction, CBSE Grade 8 Science Friction, Science - Class 8- Friction, NCERT Solutions for Class 8th: Ch 12 Friction, Class 8 CBSE Science Friction, CBSE class 8 science Friction, Grade 8 –Science - CBSE / NCERT – Friction Question Bank for eighth class, Question and Answers free worksheet PDF on Friction, Practice page and Important question and Extra question on Friction for eighth standard, Why will a pencil write on a paper, but not on a glass? When we try to push a very heavy box kept on ground, it does not move at all. Which force is preventing this box to move forward? Where does this force act? Explain why objects moving in fluids must have special shapes. Give examples to show that friction is both a friend and a foe. Four children were asked to arrange forces due to rolling, static and sliding frictions in a decreasing order. Their arrangements are given below. Choose the correct arrangement. (a) Rolling, static, sliding (b) Rolling, sliding, static (c) Static, sliding, rolling (d) Sliding, static, rolling. Alida runs her toy car on dry marble floor, wet marble floor, newspaper and towel spread on the floor. The force of friction acting on the car on different surfaces in increasing order will be: (a) Wet marble floor, dry marble floor, newspaper and towel. (b) Newspaper, towel, dry marble floor, wet marble floor. (c) Towel, newspaper, dry marble floor, wet marble floor. (d) Wet marble floor, dry marble floor, towel, newspaper. You spill a bucket of soapy water on a marble floor accidently. Would it make it easier or more difficult for you to walk on the floor? Why? Which is easier to hold in hand: a kulhar (earthen pot) or a glass tumbler? Why? Iqbal has to push a lighter box and Seema has to push a similar heavier box on the same floor. Who will have to apply a larger force and why? How do rough and smooth surfaces affect friction? Why do smooth surfaces have less friction? Why do smooth surfaces have less friction than non-smooth surfaces? Why does a rough surface have greater friction than a smooth surface? Friction depends on the nature of two surfaces in contact. Explain. Is the friction the same for all the surfaces? Does it depend on the smoothness of the surfaces?Page: 1 Files: 3
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 13 Sound, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 13 Sound, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 13 Sound Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Sound class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 13 Sound, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q and Ans, Learn 8th grade science, Chapter 13 Sound, NCERT Solutions for Class 8th Science Chapter 13 Sound, CBSE Class 8 Science Chapter 13 - Sound, Chapter 13 Sound class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 13- Sound - Questions and Answers/Notes/Worksheets Tags: Class VIII - Sound, CBSE Grade 8 Science Sound, Science - Class 8- Sound, NCERT Solutions for Class 8th: Ch 13 Sound, Class 8 CBSE Science Sound, CBSE class 8 science Sound, Grade 8 –Science - CBSE / NCERT – Sound Question Bank for eighth class, Question and Answers free worksheet PDF on Sound, Practice page and Important question and Extra question on Sound for eighth standard, State true and false, Fill in the blanks on Sound for 8th standard, Name one animal which can hear ultrasonic sounds. How is sound produced? How does an object produce sound? Name the sound producing organ in humans. Name the organs of hearing in our body. Name that part of ear which vibrates when outside sound falls on it. Name the unit used to measure the loudness of sound. Name the quantity whose unit is 'hertz'. Does any part of the body vibrate when we speak? Name the part. On what factor does the pitch of a sound depend? What is the name of passage in outer ear which carries sound waves to the eardrum? Choose the correct answer: Sound can travel through (a) gases only (b) solids only (c) liquids only (d) solids, liquids and gases. Q15. Which of the following voices is likely to have minimum frequency? (a) Baby girl (b) Baby boy (c) A man (d) A woman What is frequency of oscillation? What is the audible range of frequencies for human ears? What is vibration? How does a sound producing object differ from silent? What brings the sound of a ringing telephone bell to our ears?Page: 1 Files: 3
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 13 Sound, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 13 Sound, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 13 Sound Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Sound class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 13 Sound, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q and Ans, Learn 8th grade science, Chapter 13 Sound, NCERT Solutions for Class 8th Science Chapter 13 Sound, CBSE Class 8 Science Chapter 13 - Sound, Chapter 13 Sound class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 13- Sound - Questions and Answers/Notes/Worksheets Tags: Class VIII - Sound, CBSE Grade 8 Science Sound, Science - Class 8- Sound, NCERT Solutions for Class 8th: Ch 13 Sound, Class 8 CBSE Science Sound, CBSE class 8 science Sound, Grade 8 –Science - CBSE / NCERT – Sound Question Bank for eighth class, Question and Answers free worksheet PDF on Sound, Practice page and Important question and Extra question on Sound for eighth standard, What is the length of the vocal cord in men and women? What does the working of a toy telephone tell us about sound? Who produces sound of higher pitch: a man or a woman? Why? Name three characteristics which are used to describe oscillations. What is musical sound? Give example. What is noise pollution? What is amplitude of oscillation? Why can ultrasound not be heard by humans? Why a sound cannot be heard on the moon? Why should we not put a sharp, pointed or hard thing into our ears? How is sound produced in mridangam? What is the relation between 'time-period' and 'frequency' of an oscillating body? What differences will you hear in a sound if there is an increase in (i) amplitude, and (ii) frequency? A pendulum oscillates 40 times in 4 seconds. Find its time period and frequency. Lightning and thunder take place in the sky at the same time and at the same distance from us. Lightning is seen earlier and thunder is heard later. Can you explain? Name one solid, one liquid and one gas through which sound can travel. Whose voice is more shriller: a baby or a woman?Page: 1 Files: 3
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 13 Sound, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 13 Sound, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 13 Sound Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Sound class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 13 Sound, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q and Ans, Learn 8th grade science, Chapter 13 Sound, NCERT Solutions for Class 8th Science Chapter 13 Sound, CBSE Class 8 Science Chapter 13 - Sound, Chapter 13 Sound class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 13- Sound - Questions and Answers/Notes/Worksheets Tags: Class VIII - Sound, CBSE Grade 8 Science Sound, Science - Class 8- Sound, NCERT Solutions for Class 8th: Ch 13 Sound, Class 8 CBSE Science Sound, CBSE class 8 science Sound, Grade 8 –Science - CBSE / NCERT – Sound Question Bank for eighth class, Question and Answers free worksheet PDF on Sound, Practice page and Important question and Extra question on Sound for eighth standard, How does sound of a bird differ from roar of a lion? Which produces sound of a higher pitch: a drum or a whistle? Why? What frequency can dogs hear but not humans? Can sound travel through a vacuum? Why or why not? How does loudness depend on the amplitude of vibrations? How is sound produced in Sitar? Why are the voices of men, women and children different? How can you show that a sounding tabla is vibrating? How can we distinguish between a man's voice and a woman's voice even without seeing them? What can be done along the roads to reduce noise pollution caused by traffic from reaching the residents of the area? State one observation from everyday life which shows that sound travels slower than light. What are called inaudible sounds? How is pitch related to frequency? The sound from a mosquito is produced when it vibrates its wings at an average rate of 500 vibrations per second. What is the time period of the vibration?Page: 1 Files: 3
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 13 Sound, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 13 Sound, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 13 Sound Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Sound class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 13 Sound, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q and Ans, Learn 8th grade science, Chapter 13 Sound, NCERT Solutions for Class 8th Science Chapter 13 Sound, CBSE Class 8 Science Chapter 13 - Sound, Chapter 13 Sound class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 13- Sound - Questions and Answers/Notes/Worksheets Tags: Class VIII - Sound, CBSE Grade 8 Science Sound, Science - Class 8- Sound, NCERT Solutions for Class 8th: Ch 13 Sound, Class 8 CBSE Science Sound, CBSE class 8 science Sound, Grade 8 –Science - CBSE / NCERT – Sound Question Bank for eighth class, Question and Answers free worksheet PDF on Sound, Practice page and Important question and Extra question on Sound for eighth standard, What is the frequency of a vibrating body whose time-period is 0.05 second? By how much will the loudness of a sound change when the amplitude of vibrations is: (a) doubled? (b) halved? Your parents are going to buy a house. They have been offered one on the roadside and another three lanes away from the roadside. Which house would you suggest your parents should buy? Explain your answer. Explain in what way noise pollution is harmful to humans. What is the frequency of the sound produced when the vocal cords are: (a) tight and thin? (b) loose and thick? Write the loudness of the following in decibels: Normal breathing, Soft whisper (at 5m), Normal conversation, Busy traffic and Average factory How do we hear? Identify the part which vibrates to produce sound in the following instruments: (a) Dholak (b) Sitar (c) Flute (d) Cymbals (e) Veena (f) Tabla List sources of noise pollution in your surroundings. What is the difference between noise and music? Can music become noise sometimes? Sketch larynx and explain its function in your own words. Describe how sound is produced by the human voice box (or larynx). State the various measures which can be taken to control noise pollution in our surroundings. How can you show that sound cannot travel through a vacuum?Page: 1 Files: 4
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 14 Chemical Effects of Electric Current, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 14 Chemical Effects of Electric Current, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 14 Chemical Effects of Electric Current Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Chemical Effects of Electric Current class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 14 Chemical Effects of Electric Current, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q and Ans, Learn 8th grade science, Chapter 14 Chemical Effects of Electric Current, NCERT Solutions for Class 8th Science Chapter 14 Chemical Effects of Electric Current, CBSE Class 8 Science Chapter 14 - Chemical Effects of Electric Current, Chapter 14 Chemical Effects of Electric Current class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 14- Chemical Effects of Electric Current - Questions and Answers/Notes/Worksheets Tags: Class VIII - Chemical Effects of Electric Current, CBSE Grade 8 Science Chemical Effects of Electric Current, Science - Class 8- Chemical Effects of Electric Current, NCERT Solutions for Class 8th: Ch 14 Chemical Effects of Electric Current, Class 8 CBSE Science Chemical Effects of Electric Current, CBSE class 8 science Chemical Effects of Electric Current, Grade 8 –Science - CBSE / NCERT – Chemical Effects of Electric Current Question Bank for eighth class, Question and Answers free worksheet PDF on Chemical Effects of Electric Current, Practice page and Important question and Extra question on Chemical Effects of Electric Current for eighth standard, State true and false, Fill in the blanks on Chemical Effects of Electric Current for 8th standard, Which metal is electroplated on bathroom fittings? Name any one metal which is purified by using the chemical effect of current (or electrolysis). Do liquids also conduct electricity? Give one example of the chemical effect of electric current. How is water decomposed into hydrogen and oxygen? Name some liquids which conduct electricity. Name some liquids which do not conduct electricity. State whether vinegar and lemon juice will conduct electricity or not. What is electroplating? What happens to a compass needle kept nearby when current flows in a wire? Name a device which glows even when a weak electric current passes through it. Which is the polluting waste generated by electroplating factories? What is the advantage of using LED in testing the electrical conductivity of liquids? Does pure water conduct electricity? If not, what can we do to make it conducting? Name two metals which are usually electroplated on cheaper metals for making jewelry (or ornaments). Which effect of electric current is utilized for detecting the flow of current through a solution when a compass is used?Page: 1 Files: 3
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 14 Chemical Effects of Electric Current, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 14 Chemical Effects of Electric Current, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 14 Chemical Effects of Electric Current Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Chemical Effects of Electric Current class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 14 Chemical Effects of Electric Current, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q and Ans, Learn 8th grade science, Chapter 14 Chemical Effects of Electric Current, NCERT Solutions for Class 8th Science Chapter 14 Chemical Effects of Electric Current, CBSE Class 8 Science Chapter 14 - Chemical Effects of Electric Current, Chapter 14 Chemical Effects of Electric Current class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 14- Chemical Effects of Electric Current - Questions and Answers/Notes/Worksheets Tags: Class VIII - Chemical Effects of Electric Current, CBSE Grade 8 Science Chemical Effects of Electric Current, Science - Class 8- Chemical Effects of Electric Current, NCERT Solutions for Class 8th: Ch 14 Chemical Effects of Electric Current, Class 8 CBSE Science Chemical Effects of Electric Current, CBSE class 8 science Chemical Effects of Electric Current, Grade 8 –Science - CBSE / NCERT – Chemical Effects of Electric Current Question Bank for eighth class, Question and Answers free worksheet PDF on Chemical Effects of Electric Current, Practice page and Important question and Extra question on Chemical Effects of Electric Current for eighth standard, When the free ends of a tester are dipped into a solution, the magnetic needle shows deflection. Can you explain the reason? Which metal is usually electroplated on car parts such as bumpers and bicycle handlebars made of steel? Which metal is electroplated on iron for making cans and why? Why is the current in the circuit weak? Why do brand new cycles have shiny handlebars and wheel rims what will happen if these are scratched? Why is it dangerous to touch a working electrical appliance with wet hands? Write two common application of the chemical effect of electric current. For electroplating copper on an iron object, which terminal of the battery (positive or negative) is connected to the iron object? In case of a fire, before the firemen use the water hoses, they shut off the main electrical supply for the area. Explain why they do this. Why the bulb glows when the electric current passes through it? What is meant by the chemical effect of electric current? Give an example. Which properties of chromium metal make it suitable for electroplating? Name three liquids, which when tested in the manner shown in Figure, may cause the magnetic needle to deflect.Page: 1 Files: 3
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 14 Chemical Effects of Electric Current, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 14 Chemical Effects of Electric Current, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 14 Chemical Effects of Electric Current Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Chemical Effects of Electric Current class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 14 Chemical Effects of Electric Current, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q and Ans, Learn 8th grade science, Chapter 14 Chemical Effects of Electric Current, NCERT Solutions for Class 8th Science Chapter 14 Chemical Effects of Electric Current, CBSE Class 8 Science Chapter 14 - Chemical Effects of Electric Current, Chapter 14 Chemical Effects of Electric Current class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 14- Chemical Effects of Electric Current - Questions and Answers/Notes/Worksheets Tags: Class VIII - Chemical Effects of Electric Current, CBSE Grade 8 Science Chemical Effects of Electric Current, Science - Class 8- Chemical Effects of Electric Current, NCERT Solutions for Class 8th: Ch 14 Chemical Effects of Electric Current, Class 8 CBSE Science Chemical Effects of Electric Current, CBSE class 8 science Chemical Effects of Electric Current, Grade 8 –Science - CBSE / NCERT – Chemical Effects of Electric Current Question Bank for eighth class, Question and Answers free worksheet PDF on Chemical Effects of Electric Current, Practice page and Important question and Extra question on Chemical Effects of Electric Current for eighth standard, Is it safe for the electrician to carry out electrical repairs outdoors during heavy downpour? Explain. A child staying in a coastal region tests the drinking water and also the seawater with his tester. He finds that the compass needle deflects more in the case of seawater. Can you explain the reason? What are the chemical effects of electric current? A tester is used to check the conduction of electricity through two liquids, labeled A and B. It is found that the bulb of the tester glows brightly for liquid A while it glows very dimly for liquid B. You would conclude that (i) liquid A is a better conductor than liquid B. (ii) liquid B is a better conductor than liquid A. (iii) both liquids are equally conducting. (iv) conducting properties of liquid cannot be compared in this manner. What happens when electric current is passed through acidified water? Tap water conducts electricity whereas distilled water does not. Give reason. Why is electroplating useful? Paheli had heard that rainwater is as good as distilled water. So she collected some rainwater in a clean glass tumbler and tested it using a tester. To her surprise she found that the compass needle showed deflection. What could be the reasons? Prepare a list of objects around you that are electroplated.Page: 1 Files: 3
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 14 Chemical Effects of Electric Current, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 14 Chemical Effects of Electric Current, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 14 Chemical Effects of Electric Current Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Chemical Effects of Electric Current class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 14 Chemical Effects of Electric Current, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q and Ans, Learn 8th grade science, Chapter 14 Chemical Effects of Electric Current, NCERT Solutions for Class 8th Science Chapter 14 Chemical Effects of Electric Current, CBSE Class 8 Science Chapter 14 - Chemical Effects of Electric Current, Chapter 14 Chemical Effects of Electric Current class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 14- Chemical Effects of Electric Current - Questions and Answers/Notes/Worksheets Tags: Class VIII - Chemical Effects of Electric Current, CBSE Grade 8 Science Chemical Effects of Electric Current, Science - Class 8- Chemical Effects of Electric Current, NCERT Solutions for Class 8th: Ch 14 Chemical Effects of Electric Current, Class 8 CBSE Science Chemical Effects of Electric Current, CBSE class 8 science Chemical Effects of Electric Current, Grade 8 –Science - CBSE / NCERT – Chemical Effects of Electric Current Question Bank for eighth class, Question and Answers free worksheet PDF on Chemical Effects of Electric Current, Practice page and Important question and Extra question on Chemical Effects of Electric Current for eighth standard, The bulb does not glow in the setup shown in Figure. List the possible reasons. Explain your answer. The process that you saw in Activity 14.7 is used for purification of copper. A thin plate of pure copper and a thick rod of impure copper are used as electrodes. Copper from impure rod is sought to be transferred to the thin copper plate. Which electrode should be attached to the positive terminal of battery and why? How would you classify lemon juice- a good conductor or a poor conductor of electricity? A beaker contains an acidified copper sulphate solution. A copper plate and a carbon rod are kept in this copper sulphate solution. The copper plate is connected to the positive terminal of a battery whereas the carbon rod is connected to the negative terminal of the battery. What happens when electric current is passed through copper sulphate solution?Page: 1 Files: 2
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 15 Some Natural Phenomena, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 15 Some Natural Phenomena, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 15 Some Natural Phenomena Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Some Natural Phenomena class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 15 Some Natural Phenomena, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q and Ans, Learn 8th grade science, Chapter 15 Some Natural Phenomena, NCERT Solutions for Class 8th Science Chapter 15 Some Natural Phenomena, CBSE Class 8 Science Chapter 15 - Some Natural Phenomena, Chapter 15 Some Natural Phenomena class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 15- Some Natural Phenomena - Questions and Answers/Notes/Worksheets Tags: Class VIII - Some Natural Phenomena, CBSE Grade 8 Science Some Natural Phenomena, Science - Class 8- Some Natural Phenomena, NCERT Solutions for Class 8th: Ch 15 Some Natural Phenomena, Class 8 CBSE Science Some Natural Phenomena, CBSE class 8 science Some Natural Phenomena, Grade 8 –Science - CBSE / NCERT – Some Natural Phenomena Question Bank for eighth class, Question and Answers free worksheet PDF on Some Natural Phenomena, Practice page and Important question and Extra question on Some Natural Phenomena for eighth standard, State true and false, Fill in the blanks on Some Natural Phenomena for 8th standard, List three states in India where earthquakes are more likely to strike. How will you charge a glass rod by the method of friction? What are the two kinds of electric charges? What is a flash of light which occurs in the sky during the rainy season called? How a ballpoint pen refill can be charged by the method of friction? What are the three layers of earth? What happens when two like charges are brought together? What is the purpose of the Richter scale? What is directly below the epicenter of an earthquake? What kind of electric charge is acquired by a plastic comb rubbed with dry hair? How an inflated rubber balloon can be charged by the method of friction? What is focus of an earthquake? What is the instrument used to measure and record an earthquake? What is epicentre of an earthquake? What type of electric charge is acquired by a rubber balloon when rubbed with a woolen cloth?Page: 1 Files: 3
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 15 Some Natural Phenomena, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 15 Some Natural Phenomena, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 15 Some Natural Phenomena Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Some Natural Phenomena class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 15 Some Natural Phenomena, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q and Ans, Learn 8th grade science, Chapter 15 Some Natural Phenomena, NCERT Solutions for Class 8th Science Chapter 15 Some Natural Phenomena, CBSE Class 8 Science Chapter 15 - Some Natural Phenomena, Chapter 15 Some Natural Phenomena class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 15- Some Natural Phenomena - Questions and Answers/Notes/Worksheets Tags: Class VIII - Some Natural Phenomena, CBSE Grade 8 Science Some Natural Phenomena, Science - Class 8- Some Natural Phenomena, NCERT Solutions for Class 8th: Ch 15 Some Natural Phenomena, Class 8 CBSE Science Some Natural Phenomena, CBSE class 8 science Some Natural Phenomena, Grade 8 –Science - CBSE / NCERT – Some Natural Phenomena Question Bank for eighth class, Question and Answers free worksheet PDF on Some Natural Phenomena, Practice page and Important question and Extra question on Some Natural Phenomena for eighth standard, What are seismic waves? Which device is used to protect buildings from the effect of lightning? What is an earthquake? What causes them to happen? If scientists know so much about earthquakes, can they also predict when and where the next one will strike? Other than earthquakes what causes tremors on the earth? A positively charged object attracts another charged object placed near it. What is the nature of charge on the other object? Explain why a charged body loses its charge if we touch it with our hand. What was the magnitude of Bhuj and Kashmir earthquakes on the Richter scale? Why does a plastic comb rubbed with dry hair attract tiny pieces of paper? Name the scientist who showed that lightning and the spark from your clothes are essentially the same phenomena. Why is it not safe to stay under a tree during a thunderstorm? When a charged refill is touched with the metal top of an electroscope, its aluminium leaves diverge. Give reason. What happens when plates brush past one another, or a plate goes under another due to collision? The weather department has predicted that a thunderstorm is likely to occur on a certain day. Suppose you have to go out on that day. Would you carry an umbrella? Explain.Page: 1 Files: 3
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 15 Some Natural Phenomena, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 15 Some Natural Phenomena, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 15 Some Natural Phenomena Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Some Natural Phenomena class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 15 Some Natural Phenomena, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q and Ans, Learn 8th grade science, Chapter 15 Some Natural Phenomena, NCERT Solutions for Class 8th Science Chapter 15 Some Natural Phenomena, CBSE Class 8 Science Chapter 15 - Some Natural Phenomena, Chapter 15 Some Natural Phenomena class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 15- Some Natural Phenomena - Questions and Answers/Notes/Worksheets Tags: Class VIII - Some Natural Phenomena, CBSE Grade 8 Science Some Natural Phenomena, Science - Class 8- Some Natural Phenomena, NCERT Solutions for Class 8th: Ch 15 Some Natural Phenomena, Class 8 CBSE Science Some Natural Phenomena, CBSE class 8 science Some Natural Phenomena, Grade 8 –Science - CBSE / NCERT – Some Natural Phenomena Question Bank for eighth class, Question and Answers free worksheet PDF on Some Natural Phenomena, Practice page and Important question and Extra question on Some Natural Phenomena for eighth standard, Which of the following cannot be charged easily by friction? (a) A plastic scale (b) A copper rod (c) An inflated balloon (d) A woollen cloth. What damage is caused by lightning? When a glass rod is rubbed with a piece of silk cloth the rod (a) and the cloth both acquire positive charge. (b) becomes positively charged while the cloth has a negative charge. (c) and the cloth both acquire negative charge. (d) becomes negatively charged while the cloth has a positive charge. What will happen when the metal top of an electroscope is touched with a glass rod which has been rubbed with silk cloth? Give reason for your answer. What happens when you touch the paper clip of a self-made Electroscope? Why does it happen? What is this process called? How can we determine if an object is charged or not? What is lightning conductor? How does it work? How does a lightning conductor protect a tall building? What are the various effects of an earthquake? What will you do to protect yourself from lightning if you are in an open field? Explain why a charged balloon is repelled by another charged balloon whereas an uncharged balloon is attracted by another charged balloon?Page: 1 Files: 3
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 15 Some Natural Phenomena, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 15 Some Natural Phenomena, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 15 Some Natural Phenomena Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Some Natural Phenomena class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 15 Some Natural Phenomena, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q and Ans, Learn 8th grade science, Chapter 15 Some Natural Phenomena, NCERT Solutions for Class 8th Science Chapter 15 Some Natural Phenomena, CBSE Class 8 Science Chapter 15 - Some Natural Phenomena, Chapter 15 Some Natural Phenomena class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 15- Some Natural Phenomena - Questions and Answers/Notes/Worksheets Tags: Class VIII - Some Natural Phenomena, CBSE Grade 8 Science Some Natural Phenomena, Science - Class 8- Some Natural Phenomena, NCERT Solutions for Class 8th: Ch 15 Some Natural Phenomena, Class 8 CBSE Science Some Natural Phenomena, CBSE class 8 science Some Natural Phenomena, Grade 8 –Science - CBSE / NCERT – Some Natural Phenomena Question Bank for eighth class, Question and Answers free worksheet PDF on Some Natural Phenomena, Practice page and Important question and Extra question on Some Natural Phenomena for eighth standard, Suppose you are outside your home and an earthquake strikes. What precaution would you take to protect yourself? Name the scale on which the destructive energy of an earthquake is measured. An earthquake measures 3 on this scale. Would it be recorded by a seismograph? Is it likely to cause much damage? What precautions would you take to protect yourself during an earthquake if you are at home? Suggest three measures to protect ourselves from lightning. What causes an earthquake? What causes lightning in the sky? State some precautions that people should take to protect themselves against earthquakes if they live in seismic zones of the country.Page: 1 Files: 3
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 15 Some Natural Phenomena, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 15 Some Natural Phenomena, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 15 Some Natural Phenomena Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Some Natural Phenomena class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 15 Some Natural Phenomena, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q and Ans, Learn 8th grade science, Chapter 15 Some Natural Phenomena, NCERT Solutions for Class 8th Science Chapter 15 Some Natural Phenomena, CBSE Class 8 Science Chapter 15 - Some Natural Phenomena, Chapter 15 Some Natural Phenomena class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 15- Some Natural Phenomena - Questions and Answers/Notes/Worksheets Tags: Class VIII - Some Natural Phenomena, CBSE Grade 8 Science Some Natural Phenomena, Science - Class 8- Some Natural Phenomena, NCERT Solutions for Class 8th: Ch 15 Some Natural Phenomena, Class 8 CBSE Science Some Natural Phenomena, CBSE class 8 science Some Natural Phenomena, Grade 8 –Science - CBSE / NCERT – Some Natural Phenomena Question Bank for eighth class, Question and Answers free worksheet PDF on Some Natural Phenomena, Practice page and Important question and Extra question on Some Natural Phenomena for eighth standard . Draw a labelled diagram of a seismograph. Explain its working. Describe with the help of a diagram an instrument which can be used to detect a charged body.Page: 1 Files: 2
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 16 Light, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 16 Light, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 16 Light Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Light class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 16 Light, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q and Ans, Learn 8th grade science, Chapter 16 Light, NCERT Solutions for Class 8th Science Chapter 16 Light, CBSE Class 8 Science Chapter 16 - Light, Chapter 16 Light class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 16- Light - Questions and Answers/Notes/Worksheets Tags: Class VIII - Light, CBSE Grade 8 Science Light, Science - Class 8- Light, NCERT Solutions for Class 8th: Ch 16 Light, Class 8 CBSE Science Light, CBSE class 8 science Light, Grade 8 –Science - CBSE / NCERT – Light Question Bank for eighth class, Question and Answers free worksheet PDF on Light, Practice page and Important question and Extra question on Light for eighth standard, State true and false, Fill in the blanks on Light for 8th standard, Name a device which works on the reflection of reflected light. Name the point inside the human eye where no vision is possible. Name an eye disease caused by the deficiency of vitamin A in the diet. What type of reflection of light takes place from a plane mirror? Which part of the eye converges light rays to form the image? Where is the image of an object formed in human eye? Which part of the eye carries images to the brain? How many mirrors are there in a periscope? Name an instrument or toy which works by producing multiple reflections from three plane mirrors to form beautiful patterns. Angle of incidence is equal to the angle of reflection (a) Always (b) Sometimes (c) Under special conditions (d) Never. How many images of a candle will be seen when two mirrors are set parallel to each other and a candle is placed between them? What type of reflection of light takes place from a rough surface? What type of reflection of light takes place from a smooth surface? Which type of reflection of light leads to the formation of images? What is an 'incident ray'? What kind of lens (convex or concave) is there in our eyes? What are the main parts of the human eye? What is angle of incidence?Page: 1 Files: 3
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 16 Light, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 16 Light, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 16 Light Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Light class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 16 Light, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q and Ans, Learn 8th grade science, Chapter 16 Light, NCERT Solutions for Class 8th Science Chapter 16 Light, CBSE Class 8 Science Chapter 16 - Light, Chapter 16 Light class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 16- Light - Questions and Answers/Notes/Worksheets Tags: Class VIII - Light, CBSE Grade 8 Science Light, Science - Class 8- Light, NCERT Solutions for Class 8th: Ch 16 Light, Class 8 CBSE Science Light, CBSE class 8 science Light, Grade 8 –Science - CBSE / NCERT – Light Question Bank for eighth class, Question and Answers free worksheet PDF on Light, Practice page and Important question and Extra question on Light for eighth standard, What do you mean by ‘point of incidence’? How we see the moon? What are the two types of reflection of light? What is a ' reflected ray'? What is angle of reflection? What are the uses of periscope? Write the uses of kaleidoscope. What are luminous objects? Give some examples. What are illuminated objects? Give one example. Why cannot we see a book which is placed behind a wooden screen? What is blind spot in the eye? What type of image is formed by a plane mirror? What is lateral inversion? What is the most comfortable distance at which one can read with a normal eye? What is meant by dispersion of light'? Name a natural phenomenon showing dispersion. A ray of light is incident on a plane mirror at an angle of 40°. What is the angle of reflection? Gurmit wanted to perform Activity 16.8 using a laser torch. Her teacher advised her not to do so. Can you explain the basis of the teachers advise?Which part of the eye gives it its distinctive color?Page: 1 Files: 3
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 16 Light, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 16 Light, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 16 Light Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Light class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 16 Light, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q and Ans, Learn 8th grade science, Chapter 16 Light, NCERT Solutions for Class 8th Science Chapter 16 Light, CBSE Class 8 Science Chapter 16 - Light, Chapter 16 Light class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 16- Light - Questions and Answers/Notes/Worksheets Tags: Class VIII - Light, CBSE Grade 8 Science Light, Science - Class 8- Light, NCERT Solutions for Class 8th: Ch 16 Light, Class 8 CBSE Science Light, CBSE class 8 science Light, Grade 8 –Science - CBSE / NCERT – Light Question Bank for eighth class, Question and Answers free worksheet PDF on Light, Practice page and Important question and Extra question on Light for eighth standard, What happens to the size of the pupil of our eye in bright light? How can you show that white light consists of seven colors? What makes things visible? What is 'normal' in the reflection of light from a plane mirror? What is the name of transparent front part of an eye? Name some food items which are rich in vitamin A. Why too little or too much light is bad for our eyes? A book lying on a table in a room can be seen from all the parts of the room. Give reason? What should we do if something like a dust particle or an insect gets into our eye? How a hair dresser makes us see hair at the back of our head after the hair cut is complete? State the laws of reflection. How do we see a moving picture or a movie? What are rods and cones in the retina of an eye? Boojho stands at A just on the side of a plane mirror as shown in figure. Can he see himself in the mirror? Also can he see the image of objects situated at P, Q and R?Page: 1 Files: 3
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 16 Light, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 16 Light, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 16 Light Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Light class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 16 Light, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q and Ans, Learn 8th grade science, Chapter 16 Light, NCERT Solutions for Class 8th Science Chapter 16 Light, CBSE Class 8 Science Chapter 16 - Light, Chapter 16 Light class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 16- Light - Questions and Answers/Notes/Worksheets Tags: Class VIII - Light, CBSE Grade 8 Science Light, Science - Class 8- Light, NCERT Solutions for Class 8th: Ch 16 Light, Class 8 CBSE Science Light, CBSE class 8 science Light, Grade 8 –Science - CBSE / NCERT – Light Question Bank for eighth class, Question and Answers free worksheet PDF on Light, Practice page and Important question and Extra question on Light for eighth standard, What happens when a ray of light falls perpendicularly on the surface of a plane mirror? How many images of the coin will be seen when two plane mirrors are set at right angles to each other and a coin is placed in-between these two plane mirrors? Image formed by a plane mirror is (a) virtual, behind the mirror and enlarged (b) virtual, behind the mirror and of the same size as the object (c) real at the surface of the mirror and enlarged (d) real, behind the mirror and of the same size as the object. What is the angle of incidence of a ray if the reflected ray is at an angle of 90° to the incident ray? What is cataract? How can the vision of a person having cataract be restored? Suppose you are in a dark room. Can you see objects in the room? Can you see objects outside the room? Explain. Draw a labeled sketch of the human eye. How many images of an object will be formed when two plane mirrors are set at an angle of 45°, 60°, 120° and 180°. How does eye adjust itself to deal with light of varying intensity? Explain why, an owl can see well in the night but not during the day whereas an eagle can see well during day but not in the night.Page: 1 Files: 3
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 16 Light, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 16 Light, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 16 Light Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Light class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 16 Light, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q and Ans, Learn 8th grade science, Chapter 16 Light, NCERT Solutions for Class 8th Science Chapter 16 Light, CBSE Class 8 Science Chapter 16 - Light, Chapter 16 Light class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 16- Light - Questions and Answers/Notes/Worksheets Tags: Class VIII - Light, CBSE Grade 8 Science Light, Science - Class 8- Light, NCERT Solutions for Class 8th: Ch 16 Light, Class 8 CBSE Science Light, CBSE class 8 science Light, Grade 8 –Science - CBSE / NCERT – Light Question Bank for eighth class, Question and Answers free worksheet PDF on Light, Practice page and Important question and Extra question on Light for eighth standard, Draw a diagram to show the reflection of light from a plane mirror. Label the following on the diagram: Incident ray, Reflected ray, Angle of reflection, Normal and Angle of incidence Differentiate between regular and diffused reflection. Does diffused reflection mean the failure of the laws of reflection? Two mirrors meet at right angles. A ray of light is incident on one at an angle of 30° as shown in figure. Draw the reflected ray from the second mirror. What are the functions of the following parts of the eye? Iris, Eye-lens, Retina and Optic nerve. Explain how you can take care of your eyes. (a) Find out the position of the image of an object situated at A in the plane mirror. (b) Can Paheli at B see this image? (c) Can Boojho at C see this image? (d) When Paheli moves from B to C, where does the image of A move?Page: 1 Files: 3
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 16 Light, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 16 Light, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 16 Light Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Light class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 16 Light, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q and Ans, Learn 8th grade science, Chapter 16 Light, NCERT Solutions for Class 8th Science Chapter 16 Light, CBSE Class 8 Science Chapter 16 - Light, Chapter 16 Light class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 16- Light - Questions and Answers/Notes/Worksheets Tags: Class VIII - Light, CBSE Grade 8 Science Light, Science - Class 8- Light, NCERT Solutions for Class 8th: Ch 16 Light, Class 8 CBSE Science Light, CBSE class 8 science Light, Grade 8 –Science - CBSE / NCERT – Light Question Bank for eighth class, Question and Answers free worksheet PDF on Light, Practice page and Important question and Extra question on Light for eighth standard, Mention against each of the following whether regular or diffused reflection will take place when a beam of light strikes. Justify your answer in each case. (a) Polished wooden table (b) Chalk powder (c) Cardboard surface (d) Marble floor with water spread over it (e) Mirror (f) Piece of paper Describe the construction of a kaleidoscope. Describe an activity to show that the incident ray, the reflected ray and the normal at the point of incidence lie in the same plane.Page: 1 Files: 3
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 17 Stars and Solar System, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 17 Stars and Solar System, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 17 Stars and Solar System Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Stars and Solar System class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 17 Stars and Solar System, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q and Ans, Learn 8th grade science, Chapter 17 Stars and Solar System, NCERT Solutions for Class 8th Science Chapter 17 Stars and Solar System, CBSE Class 8 Science Chapter 17 - Stars and Solar System, Chapter 17 Stars and Solar System class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 17- Stars and Solar System - Questions and Answers/Notes/Worksheets Tags: Class VIII - Stars and Solar System, CBSE Grade 8 Science Stars and Solar System, Science - Class 8- Stars and Solar System, NCERT Solutions for Class 8th: Ch 17 Stars and Solar System, Class 8 CBSE Science Stars and Solar System, CBSE class 8 science Stars and Solar System, Grade 8 –Science - CBSE / NCERT – Stars and Solar System Question Bank for eighth class, Question and Answers free worksheet PDF on Stars and Solar System, Practice page and Important question and Extra question on Stars and Solar System for eighth standard, State true and false, Fill in the blanks on Stars and Solar System for 8th standard, Which of the following is NOT a member of the solar system? (a) An asteroid (b) A satellite (c) A constellation (d) A comet. Which of the following is NOT a planet of the sun? (a) Sirius (b) Mercury (c) Saturn (d) Earth Phases of the moon occur because (a) we can see only that part of the moon which reflects light towards us. (b) our distance from the moon keeps changing. (c) the shadow of the Earth covers only a part of moon’s surface. (d) the thickness of the moon’s atmosphere is not constant. Which is the nearest planet to the Sun? What is a satellite? Which is the farthest planet to the Sun? Which two planets show phases like the Moon? Which planet has large number of satellites? Which was the first artificial satellite launched by India? Which two planets have asteroids between them? Which is the only natural satellite of Earth? Name some artificial satellites of the Earth. What is a light year? What is the speed of light? What time of year is the constellation Ursa Major visible? What is the smallest planet in the solar system? Which planet is the biggest planet in the solar system?Page: 1 Files: 3
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 17 Stars and Solar System, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 17 Stars and Solar System, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 17 Stars and Solar System Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Stars and Solar System class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 17 Stars and Solar System, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q and Ans, Learn 8th grade science, Chapter 17 Stars and Solar System, NCERT Solutions for Class 8th Science Chapter 17 Stars and Solar System, CBSE Class 8 Science Chapter 17 - Stars and Solar System, Chapter 17 Stars and Solar System class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 17- Stars and Solar System - Questions and Answers/Notes/Worksheets Tags: Class VIII - Stars and Solar System, CBSE Grade 8 Science Stars and Solar System, Science - Class 8- Stars and Solar System, NCERT Solutions for Class 8th: Ch 17 Stars and Solar System, Class 8 CBSE Science Stars and Solar System, CBSE class 8 science Stars and Solar System, Grade 8 –Science - CBSE / NCERT – Stars and Solar System Question Bank for eighth class, Question and Answers free worksheet PDF on Stars and Solar System, Practice page and Important question and Extra question on Stars and Solar System for eighth standard, Name the largest planet of the solar system. How large is Jupiter compared to Earth? What is a star? How many planets are there in the Solar System? How many prominent stars are present in the Orion constellation? How long does it take light to travel from Alpha Centauri to Earth? What is Ursa Major also known as? Which is the smallest planet of the solar system? Which constellation appears to have the shape of a hunter? How many prominent stars are present in the Ursa Major constellation? What is the ultimate source of heat and light for the solar system? In which season of the year is the Cassiopeia constellation visible in the night sky? Name two objects other than planets which are members of the solar system. Name one constellation which is visible in the sky in the summer season. Name two constellations which are visible in the sky in the winter season. Which celestial body is seen as a bright streak of light coming down the night sky? Which constellation appears to have the shape of a big lion? How many planets are between Earth and the Sun? Name them. Which comet was last seen in 1986 after a period of 76 years? Which planet is known as the red planet and why? What do we call the heavenly bodies in the sky which orbit the planets? Which member of the Solar System appears in the sky like a bright ball of light with a long glowing tail? Name the constellation which appears to have the shape of a distorted W or M.Page: 1 Files: 3
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 17 Stars and Solar System, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 17 Stars and Solar System, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 17 Stars and Solar System Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Stars and Solar System class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 17 Stars and Solar System, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q and Ans, Learn 8th grade science, Chapter 17 Stars and Solar System, NCERT Solutions for Class 8th Science Chapter 17 Stars and Solar System, CBSE Class 8 Science Chapter 17 - Stars and Solar System, Chapter 17 Stars and Solar System class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 17- Stars and Solar System - Questions and Answers/Notes/Worksheets Tags: Class VIII - Stars and Solar System, CBSE Grade 8 Science Stars and Solar System, Science - Class 8- Stars and Solar System, NCERT Solutions for Class 8th: Ch 17 Stars and Solar System, Class 8 CBSE Science Stars and Solar System, CBSE class 8 science Stars and Solar System, Grade 8 –Science - CBSE / NCERT – Stars and Solar System Question Bank for eighth class, Question and Answers free worksheet PDF on Stars and Solar System, Practice page and Important question and Extra question on Stars and Solar System for eighth standard, Which constellation appears to have the shape of a big ladle or a question mark? What are the celestial objects that we can see in the sky? What is full moon? Which is the brightest star in the sky? What are 'celestial objects'? Which planet has a well-developed system of rings around it? Which star always remains in the same position in the sky in the north? Which unit is used to measure the distance between celestial bodies? What causes day and night on earth? What time of year is the constellation Orion visible? How will our Earth look when seen from a space and why? What causes the change in seasons? What is meteorite? Who landed on the moon for the first time? Why are stars not visible during the daytime? Why the Sun appears to rise in the east and set in the west? Which is the star nearest to the Earth? Why does Pole Star appear to be stationary in the sky?Page: 1 Files: 3
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 17 Stars and Solar System, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 17 Stars and Solar System, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 17 Stars and Solar System Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Stars and Solar System class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 17 Stars and Solar System, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q and Ans, Learn 8th grade science, Chapter 17 Stars and Solar System, NCERT Solutions for Class 8th Science Chapter 17 Stars and Solar System, CBSE Class 8 Science Chapter 17 - Stars and Solar System, Chapter 17 Stars and Solar System class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 17- Stars and Solar System - Questions and Answers/Notes/Worksheets Tags: Class VIII - Stars and Solar System, CBSE Grade 8 Science Stars and Solar System, Science - Class 8- Stars and Solar System, NCERT Solutions for Class 8th: Ch 17 Stars and Solar System, Class 8 CBSE Science Stars and Solar System, CBSE class 8 science Stars and Solar System, Grade 8 –Science - CBSE / NCERT – Stars and Solar System Question Bank for eighth class, Question and Answers free worksheet PDF on Stars and Solar System, Practice page and Important question and Extra question on Stars and Solar System for eighth standard, How long does it take sunlight to reach the Earth? What characteristics of Mars distinguish it from other planets? Which constellation appears like a big ladle or a question mark? Which is the nearest star to earth, after the sun? What is a constellation? Name any two constellations. Name the constellation which appears to have the shape of a big bear. In which part of the sky can you find Venus if it is visible as an evening star? Which agency is responsible for the development of space science programs in India? What is solar system? What is the simplest method of identifying planets from stars? What are planets? What are meteors? Which star has a system of planets with life on one of its planets? What are uses of artificial satellites? What are inner planets? What is a Meteor Shower?Page: 1 Files: 3
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 17 Stars and Solar System, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 17 Stars and Solar System, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 17 Stars and Solar System Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Stars and Solar System class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 17 Stars and Solar System, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q and Ans, Learn 8th grade science, Chapter 17 Stars and Solar System, NCERT Solutions for Class 8th Science Chapter 17 Stars and Solar System, CBSE Class 8 Science Chapter 17 - Stars and Solar System, Chapter 17 Stars and Solar System class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 17- Stars and Solar System - Questions and Answers/Notes/Worksheets Tags: Class VIII - Stars and Solar System, CBSE Grade 8 Science Stars and Solar System, Science - Class 8- Stars and Solar System, NCERT Solutions for Class 8th: Ch 17 Stars and Solar System, Class 8 CBSE Science Stars and Solar System, CBSE class 8 science Stars and Solar System, Grade 8 –Science - CBSE / NCERT – Stars and Solar System Question Bank for eighth class, Question and Answers free worksheet PDF on Stars and Solar System, Practice page and Important question and Extra question on Stars and Solar System for eighth standard, Why does the Sun appear to be bigger and brighter than all other stars? What is an artificial satellite? Name any two artificial satellites launched by India. Why the planets do not collide while revolving around the Sun? Which planet is known as evening and morning star and why? Name the eight planets of the Solar System in the order of their increasing distances from the Sun. What are asteroids? Where are most of them located? How do the planets stay in orbit around the sun? How long does it take for a full moon to change to new moon? Why Pluto is not considered as a planet anymore? What are outer planets? Why does the Moon shine? If the Moon does not have its own light, how are we able to see the moon? Do all the stars in the sky move? Explain. What are comets?Page: 1 Files: 3
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 17 Stars and Solar System, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 17 Stars and Solar System, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 17 Stars and Solar System Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Stars and Solar System class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 17 Stars and Solar System, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q and Ans, Learn 8th grade science, Chapter 17 Stars and Solar System, NCERT Solutions for Class 8th Science Chapter 17 Stars and Solar System, CBSE Class 8 Science Chapter 17 - Stars and Solar System, Chapter 17 Stars and Solar System class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 17- Stars and Solar System - Questions and Answers/Notes/Worksheets Tags: Class VIII - Stars and Solar System, CBSE Grade 8 Science Stars and Solar System, Science - Class 8- Stars and Solar System, NCERT Solutions for Class 8th: Ch 17 Stars and Solar System, Class 8 CBSE Science Stars and Solar System, CBSE class 8 science Stars and Solar System, Grade 8 –Science - CBSE / NCERT – Stars and Solar System Question Bank for eighth class, Question and Answers free worksheet PDF on Stars and Solar System, Practice page and Important question and Extra question on Stars and Solar System for eighth standard, What are some unique characteristics of Saturn? Draw a diagram of Cassiopeia constellation to show the position of main stars in it. Draw a diagram to show the position of main stars in Leo Major constellation. How is the surface of the moon? What factors make life possible on Earth? What is meant by the phases of the Moon? Why phases of the moon occur? Why does the moon change its shape every day? Why is it difficult to observe the planet Mercury? The radius of Jupiter is 11 times the radius of the Earth. Calculate the ratio of the volumes of Jupiter and the Earth. How many Earths can Jupiter accommodate? Why is the distance between stars expressed in light years? What do you understand by the statement that a star is eight light years away from the Earth?Page: 1 Files: 3
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 17 Stars and Solar System, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 17 Stars and Solar System, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 17 Stars and Solar System Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Stars and Solar System class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 17 Stars and Solar System, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q and Ans, Learn 8th grade science, Chapter 17 Stars and Solar System, NCERT Solutions for Class 8th Science Chapter 17 Stars and Solar System, CBSE Class 8 Science Chapter 17 - Stars and Solar System, Chapter 17 Stars and Solar System class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 17- Stars and Solar System - Questions and Answers/Notes/Worksheets Tags: Class VIII - Stars and Solar System, CBSE Grade 8 Science Stars and Solar System, Science - Class 8- Stars and Solar System, NCERT Solutions for Class 8th: Ch 17 Stars and Solar System, Class 8 CBSE Science Stars and Solar System, CBSE class 8 science Stars and Solar System, Grade 8 –Science - CBSE / NCERT – Stars and Solar System Question Bank for eighth class, Question and Answers free worksheet PDF on Stars and Solar System, Practice page and Important question and Extra question on Stars and Solar System for eighth standard, Explain how you can locate the Sirius Star with the help of Orion. Draw sketches to show the relative positions of prominent stars in (a) Ursa Major and (b) Orion. Explain how you can locate the Pole Star with the help of Ursa Major. Differentiate between artificial satellites and natural satellites.Page: 1 Files: 3
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 18 Pollution of Air and Water, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 18 Pollution of Air and Water, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 18 Pollution of Air and Water Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Pollution of Air and Water class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 18 Pollution of Air and Water, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q and Ans, Learn 8th grade science, Chapter 18 Pollution of Air and Watert, NCERT Solutions for Class 8th Science Chapter 18 Pollution of Air and Water, CBSE Class 8 Science Chapter 18 - Pollution of Air and Water, Chapter 18 Pollution of Air and Water class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 18- Pollution of Air and Water - Questions and Answers/Notes/Worksheets Tags: Class VIII - Pollution of Air and Water, CBSE Grade 8 Science Pollution of Air and Water, Science - Class 8- Pollution of Air and Water, NCERT Solutions for Class 8th: Ch 18 Pollution of Air and Water, Class 8 CBSE Science Pollution of Air and Water, CBSE class 8 science Pollution of Air and Water, Grade 8 –Science - CBSE / NCERT – Pollution of Air and Water Question Bank for eighth class, Question and Answers free worksheet PDF on Pollution of Air and Water, Practice page and Important question and Extra question on Pollution of Air and Water for eighth standard, Which of the following is not a greenhouse gas? (a) Carbon dioxide (b) Sulphur dioxide (c) Methane (d) Nitrogen. Which air pollutant reduces the oxygen-carrying capacity of the blood? What protects us from harmful ultraviolet rays of the sun? Name three greenhouse gases present in the atmosphere. What is potable water? Which gas contributes maximum to greenhouse effect? Name one gas which damages the ozone layer of the atmosphere. Why is Ozone layer important? Name some toxic metals whose compounds are present in industrial wastes. Name any two types of chemicals used in agriculture which cause water pollution. Name any three diseases caused by drinking polluted water containing sewage. Which gas is mainly responsible for greenhouse effect? What are the main gases that cause acid rain? Where are chlorofluorocarbons used? What are the major pollutants of air? What air pollutants are released by motor vehicles? What is air pollution? Write one source and one harmful effect of carbon monoxide. Write one source and one harmful effect of sulphur dioxide. What is Kyoto Protocol?Page: 1 Files: 3
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 18 Pollution of Air and Water, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 18 Pollution of Air and Water, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 18 Pollution of Air and Water Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Pollution of Air and Water class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 18 Pollution of Air and Water, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q and Ans, Learn 8th grade science, Chapter 18 Pollution of Air and Watert, NCERT Solutions for Class 8th Science Chapter 18 Pollution of Air and Water, CBSE Class 8 Science Chapter 18 - Pollution of Air and Water, Chapter 18 Pollution of Air and Water class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 18- Pollution of Air and Water - Questions and Answers/Notes/Worksheets Tags: Class VIII - Pollution of Air and Water, CBSE Grade 8 Science Pollution of Air and Water, Science - Class 8- Pollution of Air and Water, NCERT Solutions for Class 8th: Ch 18 Pollution of Air and Water, Class 8 CBSE Science Pollution of Air and Water, CBSE class 8 science Pollution of Air and Water, Grade 8 –Science - CBSE / NCERT – Pollution of Air and Water Question Bank for eighth class, Question and Answers free worksheet PDF on Pollution of Air and Water, Practice page and Important question and Extra question on Pollution of Air and Water for eighth standard. What is water pollution? Name any four major water pollutants. What is global warming? How do pesticides cause water pollution? Write one source and one harmful effect of oxides of nitrogen. Why hot water released by power plants and industries is considered a pollutant? Clear, transparent water is always fit for drinking. Comment. How do industries cause water pollution? Explain the differences between pure air and polluted air. What is smog? How is it formed? What are its harmful effects? Write any three ways of controlling water pollution. Why does the increased level of nutrients in the water affect the survival of aquatic organisms?Describe the ‘Green House Effect’ in your own words.Page: 1 Files: 3
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 18 Pollution of Air and Water, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 18 Pollution of Air and Water, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 18 Pollution of Air and Water Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Pollution of Air and Water class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 18 Pollution of Air and Water, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q and Ans, Learn 8th grade science, Chapter 18 Pollution of Air and Watert, NCERT Solutions for Class 8th Science Chapter 18 Pollution of Air and Water, CBSE Class 8 Science Chapter 18 - Pollution of Air and Water, Chapter 18 Pollution of Air and Water class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 18- Pollution of Air and Water - Questions and Answers/Notes/Worksheets Tags: Class VIII - Pollution of Air and Water, CBSE Grade 8 Science Pollution of Air and Water, Science - Class 8- Pollution of Air and Water, NCERT Solutions for Class 8th: Ch 18 Pollution of Air and Water, Class 8 CBSE Science Pollution of Air and Water, CBSE class 8 science Pollution of Air and Water, Grade 8 –Science - CBSE / NCERT – Pollution of Air and Water Question Bank for eighth class, Question and Answers free worksheet PDF on Pollution of Air and Water, Practice page and Important question and Extra question on Pollution of Air and Water for eighth standard. Describe the threat to the beauty of the Taj Mahal. What are the different ways in which water gets contaminated? At an individual level, how can you help reduce air pollution? How water can be made safe for drinking? How can we prevent wastage of water? (Any 4 points) What are the harmful effects of global warming? Explain circumstances leading to acid rain. How does acid rain affect us? What is acid rain? How is acid rain caused? What are the harmful effects of acid rain? You are a member of the municipal body of your town. Make a list of measures that would help your town to ensure the supply of clean water to all its residents.Page: 1 Files: 3
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NCERT Solutions for Class 8 Science PDF free download, NCERT Solutions for Class 8 Science Chapter 18 Pollution of Air and Water, to Study online or download free in PDF form. NCERT Textbook Answers of class 8 science chapter 18 Pollution of Air and Water, CBSE Class 8 Science Notes , Question Answers provided for NCERT Science Textbook for Class 8, Class 8 Science Chapter 18 Pollution of Air and Water Exercises Answers, Class 8th Science, Class 8 Science exams, class 8 science notes, science class 8 notes, ncert class 8 science, Pollution of Air and Water class 8 notes pdf, NCERT Solutions for Class 8 Science Chapter 18 Pollution of Air and Water, Download NCERT Solutions for Class 8 Science, CBSE Science Class 8 Chapter Wise Solved Q and Ans, Learn 8th grade science, Chapter 18 Pollution of Air and Watert, NCERT Solutions for Class 8th Science Chapter 18 Pollution of Air and Water, CBSE Class 8 Science Chapter 18 - Pollution of Air and Water, Chapter 18 Pollution of Air and Water class 8 science, Science-Class 8 (CBSE/NCERT)-Chapter 18- Pollution of Air and Water - Questions and Answers/Notes/Worksheets Tags: Class VIII - Pollution of Air and Water, CBSE Grade 8 Science Pollution of Air and Water, Science - Class 8- Pollution of Air and Water, NCERT Solutions for Class 8th: Ch 18 Pollution of Air and Water, Class 8 CBSE Science Pollution of Air and Water, CBSE class 8 science Pollution of Air and Water, Grade 8 –Science - CBSE / NCERT – Pollution of Air and Water Question Bank for eighth class, Question and Answers free worksheet PDF on Pollution of Air and Water, Practice page and Important question and Extra question on Pollution of Air and Water for eighth standard. What is Ganga Action Plan? When was it launched? What was its purpose? Prepare a brief speech on global warming that you have to make in your class. What are the harmful effects of water pollution? What are the main sources of air pollution? How does air get polluted?Page: 1 Files: 3