Topic outline

  • Science - Grade 7 (Chapter 11-18)

    • Science-Class 7 (CBSE/NCERT)-Chapter 11- Transportation in Animals and Plants- Questions and Answers/Notes/Worksheets – 1

      Tags: Class VII - Transportation in Animals and Plants, CBSE Grade 7 Science Transportation in Animals and Plants, Science - Class 7- Transportation in Animals and Plants, NCERT Solutions for Class 7th: Ch 11 Transportation in Animals and Plants, Class 7 CBSE Science Transportation in Animals and Plants, CBSE class 7 science Transportation in Animals and Plants, Grade 7 –Science - CBSE / NCERT – Transportation in Animals and Plants Question Bank for seventh class, Question and Answers free worksheet PDF on Transportation in Animals and Plants, Practice page and Important question and Extra question on Transportation in Animals and Plants for seventh standard, State true and false, Fill in the blanks on Transportation in Animals and Plants for 7th standard, Which vessel carries oxygen rich blood? What happens when you get a cut on your body? What does the circulatory system mainly consists of? What is excretion? What is called pulse rate? What system removes waste from the body? What is the fluid part of blood called? What does human sweat contain? What is the function of phloem? Which instrument is used to measure blood pressure? Name the major excretory product in humans. What is haemoglobin? Which veins carry oxygen rich blood? What makes the blood look red? How much urine an adult human being normally passes in 24 hours? What urine consists of? What is a tissue? What is normal resting pulse rate of human body?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 11- Transportation in Animals and Plants- Questions and Answers/Notes/Worksheets – 2

      Tags: Class VII - Transportation in Animals and Plants, CBSE Grade 7 Science Transportation in Animals and Plants, Science - Class 7- Transportation in Animals and Plants, NCERT Solutions for Class 7th: Ch 11 Transportation in Animals and Plants, Class 7 CBSE Science Transportation in Animals and Plants, CBSE class 7 science Transportation in Animals and Plants, Grade 7 –Science - CBSE / NCERT – Transportation in Animals and Plants Question Bank for seventh class, Question and Answers free worksheet PDF on Transportation in Animals and Plants, Practice page and Important question and Extra question on Transportation in Animals and Plants for seventh standard, What is the function of veins? What is the function of valves in veins? Where is heart located in human body? What is the function of Pulmonary artery? What are the excretory organs of the human body? What is xylem? Which blood vessels carry blood from all parts of the body back to the heart? What are veins? How do aquatic animals like fishes excrete their waste? How do birds, lizards and snakes excrete their waste? What is the significance of partition between the chambers of heart? How does sweat help keep you cool? Why is it necessary to excrete waste products? Differentiate between Atrium and Ventricle. What is function of xylem? What is heart beat? What is the main function of the kidneys?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 11- Transportation in Animals and Plants- Questions and Answers/Notes/Worksheets – 3

      Tags: Class VII - Transportation in Animals and Plants, CBSE Grade 7 Science Transportation in Animals and Plants, Science - Class 7- Transportation in Animals and Plants, NCERT Solutions for Class 7th: Ch 11 Transportation in Animals and Plants, Class 7 CBSE Science Transportation in Animals and Plants, CBSE class 7 science Transportation in Animals and Plants, Grade 7 –Science - CBSE / NCERT – Transportation in Animals and Plants Question Bank for seventh class, Question and Answers free worksheet PDF on Transportation in Animals and Plants, Practice page and Important question and Extra question on Transportation in Animals and Plants for seventh standard, What will happen if there are no platelets in the blood? Why is heart known as the pumping organ of the human body? What is Dialysis? Why do veins have thin walls compared to arteries? What are the three main types of blood vessels? How plant roots absorb water and minerals from the soil? Why is transport of materials necessary in a plant or in an animal? Explain. Why animals such as sponges and hydra do not have blood? Does transpiration serve any useful function in the plants? Explain. Why is blood needed by all the parts of a body? What are the Functions of Blood in Human Body? What are the three types of cells present in blood?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 11- Transportation in Animals and Plants- Questions and Answers/Notes/Worksheets – 4

      Tags: Class VII - Transportation in Animals and Plants, CBSE Grade 7 Science Transportation in Animals and Plants, Science - Class 7- Transportation in Animals and Plants, NCERT Solutions for Class 7th: Ch 11 Transportation in Animals and Plants, Class 7 CBSE Science Transportation in Animals and Plants, CBSE class 7 science Transportation in Animals and Plants, Grade 7 –Science - CBSE / NCERT – Transportation in Animals and Plants Question Bank for seventh class, Question and Answers free worksheet PDF on Transportation in Animals and Plants, Practice page and Important question and Extra question on Transportation in Animals and Plants for seventh standard, What is blood? How does the blood carry various substances? State one function of the following: i. Arteries ii. Veins iii.    Capillaries What are stomata? Give two functions of stomata. What are the components of blood? Differentiate between arteries and veins. Describe the function of the heart. Draw a diagram of the human excretory system and label the various parts. Draw a labeled diagram of the human heart. Write a note on excretory system in humans.

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    • Science-Class 7 (CBSE/NCERT)-Chapter 12- Reproduction in Plants - Questions and Answers/Notes/Worksheets – 1

      Tags: Class VII - Reproduction in Plants, CBSE Grade 7 Science Reproduction in Plants, Science - Class 7- Reproduction in Plants, NCERT Solutions for Class 7th: Ch 12 Reproduction in Plants, Class 7 CBSE Science Reproduction in Plants, CBSE class 7 science Reproduction in Plants, Grade 7 –Science - CBSE / NCERT – Reproduction in Plants Question Bank for seventh class, Question and Answers free worksheet PDF on Reproduction in Plants, Practice page and Important question and Extra question on Reproduction in Plants for seventh standard, State true and false, Fill in the blanks on Reproduction in Plants for 7th standard, Which is the reproductive part of a plant? Name the cell formed as product of fertilization. What is the male reproductive part of a flower? What is the female reproductive part of a flower? What mature ovary turns into? What is a node? Give examples of plants that reproduce by means of spores. How fungi grow on bread? What are the two modes of reproduction in plants? What is fertilisation? What is reproduction? Which plant grows from roots? How do cacti reproduce? What is pollination? Name its types. What are unisexual flowers? Give examples. What are bisexual flowers? Give examples. What are the different modes of asexual reproduction?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 12- Reproduction in Plants - Questions and Answers/Notes/Worksheets – 2

      Tags: Class VII - Reproduction in Plants, CBSE Grade 7 Science Reproduction in Plants, Science - Class 7- Reproduction in Plants, NCERT Solutions for Class 7th: Ch 12 Reproduction in Plants, Class 7 CBSE Science Reproduction in Plants, CBSE class 7 science Reproduction in Plants, Grade 7 –Science - CBSE / NCERT – Reproduction in Plants Question Bank for seventh class, Question and Answers free worksheet PDF on Reproduction in Plants, Practice page and Important question and Extra question on Reproduction in Plants for seventh standard, What are the vegetative parts of plants? Explain what you understand by sexual reproduction. State the main difference between asexual and sexual reproduction. What will happen if all seeds of a plant were to fall at the same place and grow there? What is the function of flowers in plants? How are plants benefited by seed dispersal? What types of seeds are dispersed by animals? How do potatoes reproduce? How do plants reproduce? How does sexual reproduction take place in flowering plants? Explain the difference between self-pollination and cross-pollination. How can we grow a new rose plant from the parent plant? How fruits and seeds are formed? How do algae reproduce?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 12- Reproduction in Plants - Questions and Answers/Notes/Worksheets – 3

      Tags: Class VII - Reproduction in Plants, CBSE Grade 7 Science Reproduction in Plants, Science - Class 7- Reproduction in Plants, NCERT Solutions for Class 7th: Ch 12 Reproduction in Plants, Class 7 CBSE Science Reproduction in Plants, CBSE class 7 science Reproduction in Plants, Grade 7 –Science - CBSE / NCERT – Reproduction in Plants Question Bank for seventh class, Question and Answers free worksheet PDF on Reproduction in Plants, Practice page and Important question and Extra question on Reproduction in Plants for seventh standard, What do you mean by vegetative propagation? Explain with example. How plants such as moss and ferns reproduce? How does reproduction take place in yeast? How does the process of fertilisation take place in flowers? How the male gamete in the pollen grain reaches the female gamete present in the ovule? Show self-pollination and cross pollination via a labelled diagram. Sketch the reproductive parts of a flower. Describe the various ways by which seeds are dispersed.

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    • Science-Class 7 (CBSE/NCERT)-Chapter 12- Reproduction in Plants - Questions and Answers/Notes/Worksheets – 4

      Tags: Class VII - Reproduction in Plants, CBSE Grade 7 Science Reproduction in Plants, Science - Class 7- Reproduction in Plants, NCERT Solutions for Class 7th: Ch 12 Reproduction in Plants, Class 7 CBSE Science Reproduction in Plants, CBSE class 7 science Reproduction in Plants, Grade 7 –Science - CBSE / NCERT – Reproduction in Plants Question Bank for seventh class, Question and Answers free worksheet PDF on Reproduction in Plants, Practice page and Important question and Extra question on Reproduction in Plants for seventh standard, Explain reproduction through spore formation in fungus. Describe the different methods of asexual reproduction. Give examples.

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    • Science-Class 7 (CBSE/NCERT)-Chapter 13- Motion and Time- Questions and Answers/Notes/Worksheets – 1

      Tags: Class VII - Motion and Time, CBSE Grade 7 Science Motion and Time, Science - Class 7- Motion and Time, NCERT Solutions for Class 7th: Ch 13 Motion and Time, Class 7 CBSE Science Motion and Time, CBSE class 7 science Motion and Time, Grade 7 –Science - CBSE / NCERT – Motion and Time Question Bank for seventh class, Question and Answers free worksheet PDF on Motion and Time, Practice page and Important question and Extra question on Motion and Time for seventh standard, State true and false, Fill in the blanks on Motion and Time for 7th standard, What is the basic unit of time? What is the basic unit of speed? What is speedometer? What is distance-time graph? What is speed? What is oscillatory motion? What is motion? What is circular motion? Give an example of oscillatory motion. What is non-uniform motion? What is uniform motion? What is the smallest time interval that can be measured with commonly available clocks and watches? What is a simple pendulum? How time was measured when pendulum clocks were not available? What are quartz clocks? What is average speed?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 13- Motion and Time- Questions and Answers/Notes/Worksheets – 2

      Tags: Class VII - Motion and Time, CBSE Grade 7 Science Motion and Time, Science - Class 7- Motion and Time, NCERT Solutions for Class 7th: Ch 13 Motion and Time, Class 7 CBSE Science Motion and Time, CBSE class 7 science Motion and Time, Grade 7 –Science - CBSE / NCERT – Motion and Time Question Bank for seventh class, Question and Answers free worksheet PDF on Motion and Time, Practice page and Important question and Extra question on Motion and Time for seventh standard, The distance between two stations is 240 km. A train takes 4 hours to cover this distance. Calculate the speed of the train. A simple pendulum takes 32 s to complete 20 oscillations. What is the time period of the pendulum? Salma takes 15 minutes from her house to reach her school on a bicycle. If the bicycle has a speed of 2 m/s, calculate the distance between her house and the school. When pendulum is said to have one complete oscillation? The following Fig. shows the distance-time graph for the motion of two vehicles A and B. Which one of them is moving faster? Classify the following as motion along a straight line, circular or oscillatory motion. The odometer of a car reads 57321.0 km when the clock shows the time 08:30 AM. What is the distance moved by the car, if at 08:50 AM, the odometer reading has changed to 57336.0 km? Calculate the speed of the car in km/min during this time. Express the speed in km/h also. Show the shape of the distance-time graph for the motion in the following cases: (i) A car moving with a constant speed. (ii) A car parked on a side road. A car moves with a speed of 40 km/h for 15 minutes and then with a speed of 60 km/h for the next 15 minutes. Calculate the total distance covered by the car.

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    • Science-Class 7 (CBSE/NCERT)-Chapter 13- Motion and Time- Questions and Answers/Notes/Worksheets – 3

      Tags: Class VII - Motion and Time, CBSE Grade 7 Science Motion and Time, Science - Class 7- Motion and Time, NCERT Solutions for Class 7th: Ch 13 Motion and Time, Class 7 CBSE Science Motion and Time, CBSE class 7 science Motion and Time, Grade 7 –Science - CBSE / NCERT – Motion and Time Question Bank for seventh class, Question and Answers free worksheet PDF on Motion and Time, Practice page and Important question and Extra question on Motion and Time for seventh standard, Explain how in ancient time a day, a month and a year were measured? What are the points that should be considered while choosing the most suitable scale for drawing a graph? Write down the steps to draw a graph. Which of the following distance-time graphs shows a truck moving with speed which is not constant?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 14- Electric Current and its Effects - Questions and Answers/Notes/Worksheets – 1

      Tags: Class VII - Electric Current and its Effects, CBSE Grade 7 Science Electric Current and its Effects, Science - Class 7- Electric Current and its Effects, NCERT Solutions for Class 7th: Ch 14 Electric Current and its Effects, Class 7 CBSE Science Electric Current and its Effects, CBSE class 7 science Electric Current and its Effects, Grade 7 –Science - CBSE / NCERT – Electric Current and its Effects Question Bank for seventh class, Question and Answers free worksheet PDF on Electric Current and its Effects, Practice page and Important question and Extra question on Electric Current and its Effects  for seventh standard, State true and false, Fill in the blanks on Electric Current and its Effects for 7th standard, What is electric current? Why does light bulb get hot? Who discovered magnetic effect of current? How does a bulb glow? Write some uses of battery. Which wire used in electric heater and why? What is filament? Is it possible for a wire to melt and break? Why? What is the heating effect of the electric current? Who invented electric bulb? What are the uses of heating effect of electric current? Explain the symbol of electric cell. Name any two effects of electric current. Why are fuse wires not used in circuit containing electric cell? What is an electric circuit?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 14- Electric Current and its Effects - Questions and Answers/Notes/Worksheets – 2

      Tags: Class VII - Electric Current and its Effects, CBSE Grade 7 Science Electric Current and its Effects, Science - Class 7- Electric Current and its Effects, NCERT Solutions for Class 7th: Ch 14 Electric Current and its Effects, Class 7 CBSE Science Electric Current and its Effects, CBSE class 7 science Electric Current and its Effects, Grade 7 –Science - CBSE / NCERT – Electric Current and its Effects Question Bank for seventh class, Question and Answers free worksheet PDF on Electric Current and its Effects, Practice page and Important question and Extra question on Electric Current and its Effects  for seventh standard, We could not see element in electrical appliances. Give reason. Why a fused bulb does not glow? Sometimes the cells are placed side by side. Then how are the terminals of the cells connected? Why should we look for ISI mark on electrical appliances? On what factors does the heat produced in a wire depend? What is battery? How can it be made using cells? What are electromagnets? How does a heating element work in an electric heater? Do you think an electromagnet can be used for separating plastic bags from a garbage heap? Explain. What is MCB and what is it used for? An electrician is carrying out some repairs in your house. He wants to replace a fuse by a piece of wire. Would you agree? Give reasons for your response. What are the reasons for excessive currents in the electrical circuits? The following Fig. shows four cells fixed on a board. Draw lines to indicate how you will connect their terminals with wires to make a battery of four cells.

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    • Science-Class 7 (CBSE/NCERT)-Chapter 14- Electric Current and its Effects - Questions and Answers/Notes/Worksheets – 3

      Tags: Class VII - Electric Current and its Effects, CBSE Grade 7 Science Electric Current and its Effects, Science - Class 7- Electric Current and its Effects, NCERT Solutions for Class 7th: Ch 14 Electric Current and its Effects, Class 7 CBSE Science Electric Current and its Effects, CBSE class 7 science Electric Current and its Effects, Grade 7 –Science - CBSE / NCERT – Electric Current and its Effects Question Bank for seventh class, Question and Answers free worksheet PDF on Electric Current and its Effects, Practice page and Important question and Extra question on Electric Current and its Effects  for seventh standard, An electric bulb results in wastage of electricity. Comment, What is the use of electrical fuse? What are the uses of electromagnets? When the current is switched on through a wire, a compass needle kept nearby gets deflected from its north-south position. Explain. Write the key points about electric circuit. Will the compass needle show deflection when the switch in the circuit shown below is closed? Draw in your notebook the symbols to represent the following components of electrical circuits: connecting wires, switch in the ‘OFF’ position, bulb, cell, switch in the ‘ON’ position, and battery.In the circuit shown in the below Fig. (i) Would any of the bulbs glow when the switch is in the ‘OFF’ position? (ii) What will be the order in which the bulbs A, B and C will glow when the switch is moved to the ‘ON’ position?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 14- Electric Current and its Effects - Questions and Answers/Notes/Worksheets – 4

      Tags: Class VII - Electric Current and its Effects, CBSE Grade 7 Science Electric Current and its Effects, Science - Class 7- Electric Current and its Effects, NCERT Solutions for Class 7th: Ch 14 Electric Current and its Effects, Class 7 CBSE Science Electric Current and its Effects, CBSE class 7 science Electric Current and its Effects, Grade 7 –Science - CBSE / NCERT – Electric Current and its Effects Question Bank for seventh class, Question and Answers free worksheet PDF on Electric Current and its Effects, Practice page and Important question and Extra question on Electric Current and its Effects  for seventh standard, Draw the circuit diagram to represent the circuit shown below. The bulb in the circuit shown in Fig. does not glow. Can you identify the problem? Make necessary changes in the circuit to make the bulb glow. Zubeda made an electric circuit using a cell holder shown in Fig., a switch and a bulb. When she put the switch in the ‘ON’ position, the bulb did not glow. Help Zubeda in identifying the possible defects in the circuit. Write an experiment to show the magnetic effect of current. Write an experiment to make an electromagnet. How does an electric bell work? Explain the working of an electric bell.

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    • Science-Class 7 (CBSE/NCERT)-Chapter 15 – Light - Questions and Answers/Notes/Worksheets – 1

      Tags: Class VII - Light, CBSE Grade 7 Science Light, Science - Class 7- Light, NCERT Solutions for Class 7th: Ch 15 Light, Class 7 CBSE Science Light, CBSE class 7 science Light, Grade 7 –Science - CBSE / NCERT – Light Question Bank for seventh class, Question and Answers free worksheet PDF on Light, Practice page and Important question and Extra question on Light for seventh standard, State true and false, Fill in the blanks on Light for 7th standard, Which type of mirror can form a real image? Which type of lens forms always a virtual image? Give an example of a curved mirror. What are the two types of spherical mirror? What is real image? Write some uses of lenses. What is convex mirror? What happens when light falls on a polished or a shiny surface? What makes things visible to us? What is diverging lens? What kind of image is formed by concave lens? What is the nature of the image formed by a convex mirror? What is reflection of light? What is concave mirror? Why we are not able to see the candle flame through a bent pipe? How can we change the path of light? What type of image does the outer side of a spoon show? What happens when light falls on a mirror?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 15 – Light - Questions and Answers/Notes/Worksheets – 2

      Tags: Class VII - Light, CBSE Grade 7 Science Light, Science - Class 7- Light, NCERT Solutions for Class 7th: Ch 15 Light, Class 7 CBSE Science Light, CBSE class 7 science Light, Grade 7 –Science - CBSE / NCERT – Light Question Bank for seventh class, Question and Answers free worksheet PDF on Light, Practice page and Important question and Extra question on Light for seventh standard, When does rainbow appear in the sky? We see reflection of trees or buildings in water. Give reason. Why are concave and convex mirrors called spherical mirrors? Give one use each of a concave and a convex mirror. Why the image formed is erect and is of the same size in stainless steel plate? What kind of image is formed by convex lens? Write the uses of convex mirror. Do you see colours similar to those in a rainbow somewhere else? Tina has prepared a small top with a small circular disc with seven rainbow colours painted on it. When the top rotates it appears nearly white. Why? What is the nature of the image formed by a concave mirror? What type of image does the inner side of a spoon show? State the characteristics of the image formed by a plane mirror. What is a virtual image? Give one situation where a virtual image is formed. How many colors is white light composed of? Write the uses of concave mirror. Why does obtaining the image of the sun on a paper with the help of a concave mirror burn the paper?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 15 – Light - Questions and Answers/Notes/Worksheets – 3

      Tags: Class VII - Light, CBSE Grade 7 Science Light, Science - Class 7- Light, NCERT Solutions for Class 7th: Ch 15 Light, Class 7 CBSE Science Light, CBSE class 7 science Light, Grade 7 –Science - CBSE / NCERT – Light Question Bank for seventh class, Question and Answers free worksheet PDF on Light, Practice page and Important question and Extra question on Light for seventh standard, How can you show the image of the sun on a paper? The rear view mirror of a car is a plane mirror. A driver is reversing his car at a speed of 2 m/s. The driver sees in his rear view mirror the image of a truck parked behind his car. The speed at which the image of the truck appears to approach the driver will be. Write an experiment to show that the sunlight consists of seven colours. Why the word ambulance is written laterally inverted on ambulance vehicle? Find out the letters of English alphabet or any other language known to you in which the image formed in a plane mirror appears exactly like the letter itself. Discuss your findings. What is the difference between an object and an image? David is observing his image in a plane mirror. The distance between the mirror and his image is 4 m. If he moves 1 m towards the mirror, then find out the distance between David and his image. Show that the image is at the same distance behind the plane mirror as the object is in front of it. Show how light gets reflected from a plane mirror with the help of an activity. State the differences between a convex and a concave lens.

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    • Science-Class 7 (CBSE/NCERT)-Chapter 16 – Water: A Precious Resource - Questions and Answers/Notes/Worksheets – 1

      Tags: Class VII - Water: A Precious Resource, CBSE Grade 7 Science Water: A Precious Resource, Science - Class 7- Water: A Precious Resource, NCERT Solutions for Class 7th: Ch 16 Water: A Precious Resource, Class 7 CBSE Science Water: A Precious Resource, CBSE class 7 science Water: A Precious Resource, Grade 7 –Science - CBSE / NCERT – Water: A Precious Resource  Question Bank for seventh class, Question and Answers free worksheet PDF on Water: A Precious Resource , Practice page and Important question and Extra question on Water: A Precious Resource for seventh standard, State true and false, Fill in the blanks on Water: A Precious Resource for 7th standard, When is water day celebrated? What is ground water? What is infiltration? Why do we celebrate world water day? What is aquifer? What are the main processes involved in the water cycle? Why is the water cycle important? What is the source of groundwater? How is water supplied in town? What is rainwater harvesting? You have been asked to maintain a garden. How will you minimise the use of water? There are ten tube wells in a lane of fifty houses. What could be the long term impact on the water table? How can farmer use water economically?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 16 – Water: A Precious Resource - Questions and Answers/Notes/Worksheets – 2

      Tags: Class VII - Water: A Precious Resource, CBSE Grade 7 Science Water: A Precious Resource, Science - Class 7- Water: A Precious Resource, NCERT Solutions for Class 7th: Ch 16 Water: A Precious Resource, Class 7 CBSE Science Water: A Precious Resource, CBSE class 7 science Water: A Precious Resource, Grade 7 –Science - CBSE / NCERT – Water: A Precious Resource  Question Bank for seventh class, Question and Answers free worksheet PDF on Water: A Precious Resource, Practice page and Important question and Extra question on Water: A Precious Resource for seventh standard, How increasing industries are responsible for depletion of water table? Explain how groundwater is recharged? What will consequences if water is not available to plants? Why are we left only tiny fraction of water for use even if about 71 % of the earth surface is covered with water? Explain the three form of water that exists in nature. From where do people in villages get water? List some methods to conserve water. Can we keep on drawing water from under the ground? How will it affect the water table? What are the reasons for lowering of the water table? Why is distribution of water uneven in our country?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 16 – Water: A Precious Resource - Questions and Answers/Notes/Worksheets – 3

      Tags: Class VII - Water: A Precious Resource, CBSE Grade 7 Science Water: A Precious Resource, Science - Class 7- Water: A Precious Resource, NCERT Solutions for Class 7th: Ch 16 Water: A Precious Resource, Class 7 CBSE Science Water: A Precious Resource, CBSE class 7 science Water: A Precious Resource, Grade 7 –Science - CBSE / NCERT – Water: A Precious Resource  Question Bank for seventh class, Question and Answers free worksheet PDF on Water: A Precious Resource, Practice page and Important question and Extra question on Water: A Precious Resource for seventh standard, Write a note on water table. How increasing agricultural activities are responsible for depletion of water table? How increasing population is responsible for depletion of water table? Make a sketch showing groundwater and water table. Label it. How does water on the earth has been maintained for millions of years? Explain the factors responsible for the depletion of water table. Why water is getting scarce?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 17 – Forests: Our Lifeline - Questions and Answers/Notes/Worksheets – 1

      Tags: Class VII - Forests: Our Lifeline, CBSE Grade 7 Science Forests: Our Lifeline, Science - Class 7- Forests: Our Lifeline, NCERT Solutions for Class 7th: Ch 17 Forests: Our Lifeline, Class 7 CBSE Science Forests: Our Lifeline, CBSE class 7 science Forests: Our Lifeline, Grade 7 –Science - CBSE / NCERT – Forests: Our Lifeline Question Bank for seventh class, Question and Answers free worksheet PDF on Forests: Our Lifeline , Practice page and Important question and Extra question on Forests: Our Lifeline for seventh standard, State true and false, Fill in the blanks on Forests: Our Lifeline for 7th standard, What happens if an animal dies in the forest? Which of the following is not a forest product? (i) Gum (ii) Plywood (iii) Sealing wax (iv) Kerosene. Micro-organisms act upon the dead plants to produce (i) sand (ii) mushrooms (iii) humus (iv) wood. What is known as the crown of the tree? What is canopy? List five products we get from forests. What are known as understoreys in forest? What is the effect of deforestation on soil? In which layer of the soil would you find humus? What is its importance to the soil? Why does the forest floor seem to be dark-coloured? Who would have planted trees in forest? Why even after heavy rainfall water do not stagnate in the forest? Why forests are called green lungs? Why raindrops do not hit the forest floor directly? Why are forests disappearing?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 17 – Forests: Our Lifeline - Questions and Answers/Notes/Worksheets – 2

      Tags: Class VII - Forests: Our Lifeline, CBSE Grade 7 Science Forests: Our Lifeline, Science - Class 7- Forests: Our Lifeline, NCERT Solutions for Class 7th: Ch 17 Forests: Our Lifeline, Class 7 CBSE Science Forests: Our Lifeline, CBSE class 7 science Forests: Our Lifeline, Grade 7 –Science - CBSE / NCERT – Forests: Our Lifeline Question Bank for seventh class, Question and Answers free worksheet PDF on Forests: Our Lifeline , Practice page and Important question and Extra question on Forests: Our Lifeline for seventh standard, Explain the importance of forest. Why is it important to conserve forest? What are decomposers? Name any two of them. What do they do in the forest? Explain the role of forest in maintaining the balance between oxygen and carbon dioxide in the atmosphere. Why does deforestation increase carbon dioxide in the atmosphere? Explain why there is no waste in a forest. Explain why forest is called “the dynamic living entity”? Explain how forests prevent floods. Explain how forest affects our food chain. Every part of the forest is dependent on the other parts. Comment. What difference will it make if we cut trees for a factory? Why should we worry about the conditions and issues related to forests far from us? What would happen if forests disappear?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 17 – Forests: Our Lifeline - Questions and Answers/Notes/Worksheets – 3

      Tags: Class VII - Forests: Our Lifeline, CBSE Grade 7 Science Forests: Our Lifeline, Science - Class 7- Forests: Our Lifeline, NCERT Solutions for Class 7th: Ch 17 Forests: Our Lifeline, Class 7 CBSE Science Forests: Our Lifeline, CBSE class 7 science Forests: Our Lifeline, Grade 7 –Science - CBSE / NCERT – Forests: Our Lifeline Question Bank for seventh class, Question and Answers free worksheet PDF on Forests: Our Lifeline , Practice page and Important question and Extra question on Forests: Our Lifeline for seventh standard, Explain why there is a need of variety of animals and plants in a forest. Explain how animals dwelling in the forest help it grow and regenerate. In Fig., the artist has forgotten to put the labels and directions on the arrows. Mark the directions on the arrows and label the diagram using the following labels: clouds, rain, atmosphere, carbon dioxide, oxygen, plants, animals, soil, roots, water table.

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    • Science-Class 7 (CBSE/NCERT)-Chapter 18 – Wastewater Story- Questions and Answers/Notes/Worksheets – 1

      Tags: Class VII - Wastewater Story, CBSE Grade 7 Science Wastewater Story, Science - Class 7- Wastewater Story, NCERT Solutions for Class 7th: Ch 18 Wastewater Story, Class 7 CBSE Science Wastewater Story, CBSE class 7 science Wastewater Story, Grade 7 –Science - CBSE / NCERT – Wastewater Story Question Bank for seventh class, Question and Answers free worksheet PDF on Wastewater Story , Practice page and Important question and Extra question on Wastewater Story for seventh standard, State true and false, Fill in the blanks on Wastewater Story for 7th standard, Q3. Which day is celebrated as World Water Day? Name two chemicals used to disinfect water. What is sewerage? Why chemicals should not be thrown down the drain? What are the reasons for scarcity of freshwater? What is waste water? What are the harmful effects of drinking contaminated water? What causes blockage of the drain? Why air is pumped into clarified water? Why should eucalyptus trees be planted along sewage ponds? Write two uses of ozone. Why are bacteria important in sewage treatment? What is cleaning of water? Why should oils and fats be not released in the drain? Explain.

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    • Science-Class 7 (CBSE/NCERT)-Chapter 18 – Wastewater Story- Questions and Answers/Notes/Worksheets – 2

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