Topic outline

  • Science For Grade 7 (Chapter 01-10)

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

      Tags: Class VII - Nutrition in Plants, CBSE Grade 7 Science Nutrition in plants, Science - Class 7- Nutrition in plants, NCERT Solutions for Class 7th: Ch 1 Nutrition in Plants, Class 7 CBSE Science Nutrition in Plants, CBSE class 7 science nutrition in plants, Grade 7 –Science - CBSE / NCERT – Nutrition in Plants Question Bank for seventh class, Question and Answers free worksheet PDF on Nutrition in Plants, Practice page and Important question and Extra question on Nutrition in Plants for seventh standard, State true and false, Fill in the blanks on Nutrition in Plants for 7th standard, Name a parasitic plant with yellow, slender and tubular stem. Give one example of parasite. Name one plant that traps and feeds on insects. Name a plant that has both autotrophic and heterotrophic mode of nutrition. How can cells be seen? What are fluffy umbrella-like patches growing on rotting wood during the rainy season called? Where is nucleus located in a cell? What are carbohydrates made up of? From where do plants get raw materials to prepare their food? Where does the synthesis of food in a plant usually take place? What is the ultimate source of energy for all living organisms? Write an equation that represents the process photosynthesis. What are the components of food? What are insectivorous plants? What do you mean by nutrition? Why photosynthesis is named so?  What are heterotrophs? What are stomata? What are called autotrophs? What is heterotrophic nutrition?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 1- Nutrition in Plants - Questions and Answers/Notes/Worksheets – 2

      Tags: Class VII - Nutrition in Plants, CBSE Grade 7 Science Nutrition in plants, Science - Class 7- Nutrition in plants, NCERT Solutions for Class 7th: Ch 1 Nutrition in Plants, Class 7 CBSE Science Nutrition in Plants, CBSE class 7 science nutrition in plants, Grade 7 –Science - CBSE / NCERT – Nutrition in Plants Question Bank for seventh class, Question and Answers free worksheet PDF on Nutrition in Plants, Practice page and Important question and Extra question on Nutrition in Plants for seventh standard, What are nutrients? What is chlorophyll? Where and in what conditions do fungi grow? How do fungi grow and develop? Why algae are green in colour? What are the raw materials required for photosynthesis? Do insectivorous plants perform photosynthesis? What are algae? Why do organisms need to take food? Why plants such as pitcher plant do not get all the required nutrients from the soil in which they grow? What is Cuscuta? What is the role of rhizobium bacteria in leguminous plant? Some plants have deep red, violet or brown leaves. Do these leaves also carry out photosynthesis? What is so special about the leaves that they can synthesis food but other parts of the plant cannot? How would you test the presence of starch in leaves? How do plants obtain the raw materials from the surroundings?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 1- Nutrition in Plants - Questions and Answers/Notes/Worksheets – 3

      Tags: Class VII - Nutrition in Plants, CBSE Grade 7 Science Nutrition in plants, Science - Class 7- Nutrition in plants, NCERT Solutions for Class 7th: Ch 1 Nutrition in Plants, Class 7 CBSE Science Nutrition in Plants, CBSE class 7 science nutrition in plants, Grade 7 –Science - CBSE / NCERT – Nutrition in Plants Question Bank for seventh class, Question and Answers free worksheet PDF on Nutrition in Plants, Practice page and Important question and Extra question on Nutrition in Plants for seventh standard, Explain the mode of nutrition in fungi. If the pitcher plant is green and carries out photosynthesis, then why does it feed on insects? How farmer is benefited from symbiotic relationship between rhizobium bacteria and legumes? How do plants transport raw materials to the food factories of the plants? From where do the plants obtain nitrogen? Can we say that the insectivorous plants are partial heterotrophs? Explain symbiotic relationship in rhizobium and leguminous plants. Give a brief description of the process of synthesis of food in green plants? Explain symbiotic relationship with the help of example.

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    • Science-Class 7 (CBSE/NCERT)-Chapter 1- Nutrition in Plants - Questions and Answers/Notes/Worksheets – 4

      Tags: Class VII - Nutrition in Plants, Grade 7 –Science - CBSE / NCERT – Nutrition in Plants Question Bank for seventh class, Question and Answers free worksheet PDF on Nutrition in Plants, Practice page and Important question and Extra question on Nutrition in Plants for seventh standard, Define cells, cell membrane, nucleus and cytoplasm. Distinguish between a parasite and a saprotroph. Show with the help of a sketch that the plants are the ultimate source of food. Can we imagine life on earth in the absence of photosynthesis? Draw a diagram showing photosynthesis. Write a note on pitcher plant? How nutrients are replenished in the soil?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 2- Nutrition in Animals - Questions and Answers/Notes/Worksheets – 1

      Tags: Class VII - Nutrition in Plants, Grade 7 –Science - CBSE / NCERT – Nutrition in Animals Question Bank for seventh class, Question and Answers free worksheet PDF on Nutrition in Animals, Practice page and Important question and Extra question on Nutrition in Animals for seventh standard, State true and false, Fill in the blanks on Nutrition in Animals for 7th standard, What is the organ that stores bile? Which part of the digestive canal is involved in killing bacteria? Name the part of digestive canal involved in chewing of food. Where are fats digested in the body? Where is the water from undigested food absorbed in the body? What kills bacteria that enter along with the juices to act? Where food is completely digested? Where are faeces formed in the human body? Which glands secrete saliva? Which glands secrete saliva? Which gland in our body secretes bile? Where faeces are stored? What are the end products of carbohydrate? Name the end products of fats. Write the end products of proteins. What causes diarrhoea in human beings? Which is the largest gland in the human body? What is ingestion? What are the different types of teeth? What does saliva do to food in our mouth?

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

      Tags: Class VII - Nutrition in Plants, Grade 7 –Science - CBSE / NCERT – Nutrition in Animals Question Bank for seventh class, Question and Answers free worksheet PDF on Nutrition in Animals, Practice page and Important question and Extra question on Nutrition in Animals for seventh standard, How does food pass from the mouth to the stomach? What is rumen? How does an amoeba move? What is the finger like projections present in the inner wall of the small intestine? Which organ expelled out the undigested and unabsorbed residues from human body? What are permanent teeth? What does animal nutrition include? What do you mean by animal nutrition? What are the different modes of feeding in animals? What is digestion? Name the glands that secrete digestive juices. What is diarrhoea? What is ORS? Where is the bile produced? Which component of the food does it help to digest? What are ruminant animals? Where is the pancreas located in human body? How does an amoeba capture its food? What do pancreatic juices digest? What is absorption in terms of digestion? What do you mean by rumination? What is cud? What are milk teeth?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 2- Nutrition in Animals - Questions and Answers/Notes/Worksheets – 3

      Tags: Class VII - Nutrition in Plants, Grade 7 –Science - CBSE / NCERT – Nutrition in Animals Question Bank for seventh class, Question and Answers free worksheet PDF on Nutrition in Animals, Practice page and Important question and Extra question on Nutrition in Animals for seventh standard, What are the major culprits of tooth decay? Why do we get instant energy from glucose? What are the main parts of the alimentary canal? How is food prevented from entering the windpipe? What is small intestine? Why we cannot digest cellulose like the cattle do? Can we survive only on raw, leafy vegetables/grass? Discuss. Explain the process of digestion in grass eating animals. Write a short note on digestion in starfish. Write a short note on large intestine. How can we prevent tooth decay? What are villi? What is their location and function? What are the functions of the tongue in human body?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 2- Nutrition in Animals - Questions and Answers/Notes/Worksheets – 4

      Tags: Class VII - Nutrition in Plants, Grade 7 –Science - CBSE / NCERT – Nutrition in Animals Question Bank for seventh class, Question and Answers free worksheet PDF on Nutrition in Animals, Practice page, Important question and Extra question on Nutrition in Animals for seventh standard, Draw a labeled diagram of amoeba. Name the type of carbohydrate that can be digested by ruminants but not by humans. Give the reason also. What is tooth decay? Explain the process of nutrition in Amoeba. What substances are secreted in the stomach? Write one similarity and one difference between the nutrition in amoeba and human beings. How does the stomach work?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 2- Nutrition in Animals - Questions and Answers/Notes/Worksheets – 5

      Tags: Class VII - Nutrition in Plants, Grade 7 –Science - CBSE / NCERT – Nutrition in Animals Question Bank for seventh class, Question and Answers free worksheet PDF on Nutrition in Animals, Practice page, Important question and Extra question on Nutrition in Animals for seventh standard, Draw a labeled diagram of digestive system of cow. Draw a labeled diagram showing arrangement of teeth and different type of teeth. Draw a labeled diagram of human digestive system.

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    • Science-Class 7 (CBSE/NCERT)-Chapter 3 - Fibre to Fabric - Questions and Answers/Notes/Worksheets – 1

      Tags: Class VII - Fibre to Fabric, Grade 7 –Science - CBSE / NCERT – Fibre to Fabric Question Bank for seventh class, Question and Answers free worksheet PDF on Fibre to Fabric, Practice page and Important question and Extra question on Fibre to Fabric for seventh standard, State true and false, Fill in the blanks on Fibre to Fabric for 7th standard, Which parts of the black sheep have wool? What is meant by the white fleece of the lamb? What is Sericulture? What is the scientific name of mulberry? Name some animals which give us wool. Which leads the world in silk production? Is silk a good conductor of heat? What do you mean by yarn? Name some Indian breed of sheep. What are the different types of silk? Define spinning. What is the most common silk moth? What do you understand by wool? What do you mean by occupational hazards? What is cocoon? Where does angora wool come from? What are silkworms? What is weaving? What is Rearing? What is called reeling the silk?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 3 - Fibre to Fabric - Questions and Answers/Notes/Worksheets – 2

      Tags: Class VII - Fibre to Fabric, Grade 7 –Science - CBSE / NCERT – Fibre to Fabric Question Bank for seventh class, Question and Answers free worksheet PDF on Fibre to Fabric, Practice page and Important question and Extra question on Fibre to Fabric for seventh standard, Why caterpillars need to shed their skin when they grow bigger? What do you mean by shearing? Write the sequence of steps involved in the processing of wool. How are Pashmina Shawls made? Why sheep have a thick coat of hair? What is fibre? How and when shearing is done? Why shearing does not hurt the sheep? What is scouring? Where does angora wool come from? What is silk route? What do sheep feed on? Where rearing and breeding of sheep is popular in India? What are the two types of fibres that form the fleece of a sheep? Why caterpillars should not be collected with bare hands? Why sorter's job in wool industry is a risky job? What is selective breeding?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 3 - Fibre to Fabric - Questions and Answers/Notes/Worksheets – 3

      Tags: Class VII - Fibre to Fabric, Grade 7 –Science - CBSE / NCERT – Fibre to Fabric Question Bank for seventh class, Question and Answers free worksheet PDF on Fibre to Fabric, Practice page and Important question and Extra question on Fibre to Fabric for seventh standard, Explain the process of obtaining silk from cocoon. What do you know about discovery of silk? Explain various steps involved in the process of making wool? Write a note on rearing silkworm.

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    • Science-Class 7 (CBSE/NCERT)-Chapter 4-Heat - Questions and Answers/Notes/Worksheets – 1

      Tags: Class VII - Heat, CBSE Grade 7 Science Heat, Science - Class 7- Heat, NCERT Solutions for Class 7th: Ch 4 Heat, Class 7 CBSE Science Heat, CBSE class 7 science Heat, Grade 7 –Science - CBSE / NCERT – Heat Question Bank for seventh class, Question and Answers free worksheet PDF on Heat, Practice page and Important question and Extra question on Heat for seventh standard, State true and false, Fill in the blanks on Heat for 7th standard, In which direction does the smoke go? What do you mean by temperature? Which device is used to measure temperature? What is that silver stuff in a thermometer? What is the unit of temperature as adopted by India? What is the normal temperature of a human being? What is the range of a laboratory thermometer? What is the use of the kink in clinical thermometer? How does heat flow from one object to another? Does transfer of heat by radiation require any medium? Do all hot bodies radiate heat? How does heat transfer in liquids and gases? Will heat transfer if the temperature of two objects is the same? What should be the level of mercury in the clinical thermometer before use? How does heat transfer in solids? What is the best way to clean a thermometer? What is Conduction? What are insulators of heat? What are conductors of heat?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 4-Heat - Questions and Answers/Notes/Worksheets – 2

      Tags: Class VII - Heat, CBSE Grade 7 Science Heat, Science - Class 7- Heat, NCERT Solutions for Class 7th: Ch 4 Heat, Class 7 CBSE Science Heat, CBSE class 7 science Heat, Grade 7 –Science - CBSE / NCERT – Heat Question Bank for seventh class, Question and Answers free worksheet PDF on Heat, Practice page and Important question and Extra question on Heat for seventh standard, What is clinical thermometer? Give two examples each of conductors and insulators of heat. How does the heat travel in air? What do you understand by heat? What is the use of maximum-minimum thermometer? One litre of water at 30°C is mixed with one litre of water at 50°C. The temperature of the mixture will be, Why does the mercury not fall or rise in a clinical thermometer when taken out of the mouth? Why clinical thermometer cannot be used to measure high temperatures? Explain land breeze. What is the concern associated with the use of mercury thermometer? Explain the construction of clinical thermometer. In places of hot climate it is advised that the outer walls of houses be painted white. Explain. Is it possible to construct buildings that are not affected much by heat and cold outside? What do you mean by maximum-minimum thermometer? Why clinical thermometers range from 35°C to 42°C? Discuss why wearing more layers of clothing during winter keeps us warmer than wearing just one thick piece of clothing.

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    • Science-Class 7 (CBSE/NCERT)-Chapter 4-Heat - Questions and Answers/Notes/Worksheets – 3

      Tags: Class VII - Heat, CBSE Grade 7 Science Heat, Science - Class 7- Heat, NCERT Solutions for Class 7th: Ch 4 Heat, Class 7 CBSE Science Heat, CBSE class 7 science Heat, Grade 7 –Science - CBSE / NCERT – Heat Question Bank for seventh class, Question and Answers free worksheet PDF on Heat, Practice page and Important question and Extra question on Heat for seventh standard, When we come out in the sun, we feel warm. How does the heat from the sun reach us? In summer we prefer light-coloured clothes and in winter we usually wear dark-coloured clothes. Why is it so? What is sea breeze? Two thin blankets joined together are usually warmer than one thick blanket. Give reason. How water gets heated? An iron ball at 40°C is dropped in a mug containing water at 40°C. The heat will, A wooden spoon is dipped in a cup of ice cream. Its other end, Stainless steel pans are usually provided with copper bottoms. The reason for this could be that, State the similarities and differences between the laboratory thermometer and the clinical thermometer. What are the precautions that need to be observed while reading a clinical thermometer? State the precaution to be observed while using a laboratory thermometer. Why can't we use a laboratory thermometer to measure human body temperature?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 5 - Acids, Bases and Salts - Questions and Answers/Notes/Worksheets – 1

      Tags: Class VII - Acids, Bases and Salts, CBSE Grade 7 Science Acids, Bases and Salts, Science - Class 7- Acids, Bases and Salts, NCERT Solutions for Class 7th: Ch 5 Acids, Bases and Salts, Class 7 CBSE Science Acids, Bases and Salts, CBSE class 7 science Acids, Bases and Salts, Grade 7 –Science - CBSE / NCERT – Acids, Bases and Salts Question Bank for seventh class, Question and Answers free worksheet PDF on Acids, Bases and Salts, Practice page and Important question and Extra question on Acids, Bases and Salts for seventh standard, State true and false, Fill in the blanks on Acids, Bases and Salts for 7th standard, What is acid rain? Which acid naturally present in our stomach? What is the role of hydrochloric acid in the stomach? Which acid is present in an ant sting? What is the nature of soap solution? What is the nature of distilled water? State the nature of baking soda. Where does the word acid come from? Why curd, lemon juice, orange juice and vinegar taste sour? Which is the most commonly used natural indicator? Tom rubs a solution between fingers and feels soapy, what is the nature of that solution? Name the acid which is present in each cell of our body. When red litmus paper is dipped in a solution; it remains red, what is the nature of the solution? What are the effects of acid rain? What does organic matter do in soil? Why solid baking soda does not change colour of dry litmus paper? How acidic soil can be treated? What are salts? Give example. What is the role of DNA in the cell the human body?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 5 - Acids, Bases and Salts - Questions and Answers/Notes/Worksheets – 2

      Tags: Class VII - Acids, Bases and Salts, CBSE Grade 7 Science Acids, Bases and Salts, Science - Class 7- Acids, Bases and Salts, NCERT Solutions for Class 7th: Ch 5 Acids, Bases and Salts, Class 7 CBSE Science Acids, Bases and Salts, CBSE class 7 science Acids, Bases and Salts, Grade 7 –Science - CBSE / NCERT – Acids, Bases and Salts Question Bank for seventh class, Question and Answers free worksheet PDF on Acids, Bases and Salts, Practice page and Important question and Extra question on Acids, Bases and Salts for seventh standard, Give examples of some acids and bases. What are indicators? What is the effect of the China rose indicator on acidic and basic solutions? Ammonia is found in many household products, such as window cleaners. It turns red litmus blue. What is its nature? Why a turmeric stain on my white shirt is turned to red when it is washed with soap. How to prepare lime water? Blue litmus paper is dipped in a solution. It remains blue. What is the nature of the solution? Explain. What do you mean by neutral solution? Give examples. Is the distilled water acidic/basic/neutral? How would you verify it? How does rain become acidic? Why factory waste is neutralised before disposing it into the water bodies? Calamine solution is applied on the skin when an ant bites. Give reason. Name the source from which litmus solution is obtained. What is the use of this solution? Why we take an antacid tablet when we suffer from acidity? Explain the process of neutralisation with the help of an example.

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    • Science-Class 7 (CBSE/NCERT)-Chapter 5 - Acids, Bases and Salts - Questions and Answers/Notes/Worksheets – 3

      Class 7- Acids, Bases and Salts, NCERT Solutions for Class 7th: Ch 5 Acids, Bases and Salts, Class 7 CBSE Science Acids, Bases and Salts, CBSE class 7 science Acids, Bases and Salts, Grade 7 –Science - CBSE / NCERT – Acids, Bases and Salts Question Bank for seventh class, Question and Answers free worksheet PDF on Acids, Bases and Salts, Practice page and Important question and Extra question on Acids, Bases and Salts for seventh standard, Dorji has a few bottles of soft drink in his restaurant. But, unfortunately, these are not labelled. He has to serve the drinks on the demand of customers. One customer wants acidic drink, another wants basic and third one wants neutral drink. How will Dorji decide which drink is to be served to whom? State few properties of base. State few properties of acids. State the differences between acids and bases. Three liquids are given to you. One is hydrochloric acid; another is sodium hydroxide and third is a sugar solution. How will you identify them? You have only turmeric indicator.

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    • Science-Class 7 (CBSE/NCERT)-Chapter 6 - Physical and Chemical Changes - Questions and Answers/Notes/Worksheets – 1

      Tags: Class VII - Physical and Chemical Changes, CBSE Grade 7 Science Physical and Chemical Changes, Science - Class 7- Physical and Chemical Changes, NCERT Solutions for Class 7th: Ch 6 Physical and Chemical Changes, Class 7 CBSE Science Physical and Chemical Changes, CBSE class 7 science Physical and Chemical Changes, Grade 7 –Science - CBSE / NCERT – Physical and Chemical Changes Question Bank for seventh class, Question and Answers free worksheet PDF on Physical and Chemical Changes, Practice page and Important question and Extra question on Physical and Chemical Changes for seventh standard, State true and false, Fill in the blanks on Physical and Chemical Changesfor 7th standard, What type of change is crystallisation? What type of change is involved in rusting of iron? Write one property of stainless steel. What type of change is formation of manure? Which of the two is permanent change chemical change or physical change? What do you understand by chemical change? State the conditions necessary for rusting of iron? What is galvanisation? What is added to steel to make it stainless? Why formation of manure from leaves is a chemical change? Why souring of milk is a chemical change? What is rust? What is blue vitriol? Name the two methods by which rusting of iron can be prevented. What happens when baking soda is treated with vinegar? Which technique is better for obtaining sugar from sugar solution?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 6 - Physical and Chemical Changes - Questions and Answers/Notes/Worksheets – 2

      Tags: Class VII - Physical and Chemical Changes, CBSE Grade 7 Science Physical and Chemical Changes, Science - Class 7- Physical and Chemical Changes, NCERT Solutions for Class 7th: Ch 6 Physical and Chemical Changes, Class 7 CBSE Science Physical and Chemical Changes, CBSE class 7 science Physical and Chemical Changes, Grade 7 –Science - CBSE / NCERT – Physical and Chemical Changes Question Bank for seventh class, Question and Answers free worksheet PDF on Physical and Chemical Changes, Practice page and Important question and Extra question on Physical and Chemical Changes for seventh standard, What is crystallisation?, Why a wet iron pan often gets rusted if left in that state for some time?, Why does rusting takes place faster during rainy season?, What are physical properties?, What is a physical change? What is called a chemical reaction? Why a slice of an apple acquires a brown colour if it is not consumed immediately? Write down the equation representing the process of rusting. Why tearing of paper into pieces is a physical change? What happens when magnesium oxide is dissolved in water? Why is spoiling of food a chemical change? How would you show that setting of curd is a chemical change? Why explosion of fireworks is a chemical change? Explain how painting of an iron gate prevents it from rusting. Why is hacksaw blade’s color change on heating considered as a physical change? Why do ships suffer a lot of damage from rusting in spite of being painted?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 6 - Physical and Chemical Changes - Questions and Answers/Notes/Worksheets – 3

      Tags: Class VII - Physical and Chemical Changes, CBSE Grade 7 Science Physical and Chemical Changes, Science - Class 7- Physical and Chemical Changes, NCERT Solutions for Class 7th: Ch 6 Physical and Chemical Changes, Class 7 CBSE Science Physical and Chemical Changes, CBSE class 7 science Physical and Chemical Changes, Grade 7 –Science - CBSE / NCERT – Physical and Chemical Changes Question Bank for seventh class, Question and Answers free worksheet PDF on Physical and Chemical Changes, Practice page and Important question and Extra question on Physical and Chemical Changes for seventh standard, Why is melting of ice a physical change? What happens when carbon dioxide is passed through lime water? Why rusting of iron objects are faster in coastal areas than in deserts? Why stretching of rubber band is a physical change? Ozone acts as a natural shield against ultraviolet radiation. Explain, What happens when magnesium ribbon is burnt in air? What is rusting? When baking soda is mixed with lemon juice, bubbles are formed with the evolution of a gas. What type of change is it? Explain. Why are chemical changes important in our daily lives? In addition to new products, what else may accompany a chemical change?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 6 - Physical and Chemical Changes - Questions and Answers/Notes/Worksheets – 4

      Tags: Class VII - Physical and Chemical Changes, CBSE Grade 7 Science Physical and Chemical Changes, Science - Class 7- Physical and Chemical Changes, NCERT Solutions for Class 7th: Ch 6 Physical and Chemical Changes, Class 7 CBSE Science Physical and Chemical Changes, CBSE class 7 science Physical and Chemical Changes, Grade 7 –Science - CBSE / NCERT – Physical and Chemical Changes Question Bank for seventh class, Question and Answers free worksheet PDF on Physical and Chemical Changes, Practice page and Important question and Extra question on Physical and Chemical Changes for seventh standard, Classify the changes involved in the following processes as physical or chemical changes, When a candle burns, both physical and chemical changes take place. Identify these changes. Give another example of a familiar process in which both the chemical and physical changes take place. Explain why burning of wood and cutting it into small pieces are considered as two different types of changes. What happens when an iron nail is dipped in copper sulphate solution? Differentiate between physical and chemical change. Describe how crystals of copper sulphate are prepared.

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    • Science-Class 7 (CBSE/NCERT)-Chapter 7- Weather, Climate and Adaptations of Animals to Climate - Questions and Answers/Notes/Worksheets – 1

      Tags: Class VII - Weather, Climate and Adaptations of Animals to Climate, CBSE Grade 7 Science Weather, Climate and Adaptations of Animals to Climate, Science - Class 7- Weather, Climate and Adaptations of Animals to Climate, NCERT Solutions for Class 7th: Ch 7 Weather, Climate and Adaptations of Animals to Climate, Class 7 CBSE Science Weather, Climate and Adaptations of Animals to Climate, CBSE class 7 science Weather, Climate and Adaptations of Animals to Climate, Grade 7 –Science - CBSE / NCERT – Weather, Climate and Adaptations of Animals to Climate Question Bank for seventh class, Question and Answers free worksheet PDF on Weather, Climate and Adaptations of Animals to Climate, Practice page and Important question and Extra question on Weather, Climate and Adaptations of Animals to Climate for seventh standard, State true and false, Fill in the blanks on Weather, Climate and Adaptations of Animals to Climate for 7th standard, Name one migratory bird. What is humidity? Why do penguins huddle together? Which of the two changes frequently, weather or climate? Name the place in India having wet climate. Which instrument is used to measure rainfall? What is the climate of Jammu and Kashmir? Are the days shorter in winter than in summer? How does the ability to camouflage help an animal? What type of place experiences hot and dry climate? Name some animals found in rainforests. Name some animals that migrate. Name some animals found in polar region. Name the elements that determine the weather of a place. What is the climate like in North East India? Which features adapt polar bears to live in extremely cold climate? What are called maximum and minimum thermometers?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 7- Weather, Climate and Adaptations of Animals to Climate - Questions and Answers/Notes/Worksheets – 2

      Tags: Class VII - Weather, Climate and Adaptations of Animals to Climate, CBSE Grade 7 Science Weather, Climate and Adaptations of Animals to Climate, Science - Class 7- Weather, Climate and Adaptations of Animals to Climate, NCERT Solutions for Class 7th: Ch 7 Weather, Climate and Adaptations of Animals to Climate, Class 7 CBSE Science Weather, Climate and Adaptations of Animals to Climate, CBSE class 7 science Weather, Climate and Adaptations of Animals to Climate, Grade 7 –Science - CBSE / NCERT – Weather, Climate and Adaptations of Animals to Climate Question Bank for seventh class, Question and Answers free worksheet PDF on Weather, Climate and Adaptations of Animals to Climate, Practice page and Important question and Extra question on Weather, Climate and Adaptations of Animals to Climate for seventh standard, The tropical rainforest has a large population of animals. Explain why it is so? When are the maximum and minimum temperatures likely to occur during the day? Why do toucans have big beaks, and what purpose does it serve? What do you understand by the term weather? Name some countries where the tropical rainforests are found. What kind of information does a weather report carry? Name some well-known countries that belong to the Polar Regions. What do Meteorological Department of the Government do? What is a rain gauge? Write some of the adaptations of animals found in tropical rainforest. How do migratory birds find their way? Why birds migrate? Do all the seven days have the same maximum and minimum temperatures, humidity and rainfall? Give reason.

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    • Science-Class 7 (CBSE/NCERT)-Chapter 7- Weather, Climate and Adaptations of Animals to Climate - Questions and Answers/Notes/Worksheets – 3

      Tags: Class VII - Weather, Climate and Adaptations of Animals to Climate, CBSE Grade 7 Science Weather, Climate and Adaptations of Animals to Climate, Science - Class 7- Weather, Climate and Adaptations of Animals to Climate, NCERT Solutions for Class 7th: Ch 7 Weather, Climate and Adaptations of Animals to Climate, Class 7 CBSE Science Weather, Climate and Adaptations of Animals to Climate, CBSE class 7 science Weather, Climate and Adaptations of Animals to Climate, Grade 7 –Science - CBSE / NCERT – Weather, Climate and Adaptations of Animals to Climate Question Bank for seventh class, Question and Answers free worksheet PDF on Weather, Climate and Adaptations of Animals to Climate, Practice page and Important question and Extra question on Weather, Climate and Adaptations of Animals to Climate for seventh standard, What are the characteristics of the Polar Regions? How weather is a complex phenomenon? What are the adaptations of penguins? All changes in the weather are caused by the sun. Explain, How tropical rainforest supports wide variety of plants and animals? How do elephant living in the tropical rainforest adapt itself? Explain, with examples, why we find animals of certain kind living in particular climatic conditions? Write a short note on Beard ape.

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    • Science-Class 7 (CBSE/NCERT)-Chapter 7- Weather, Climate and Adaptations of Animals to Climate - Questions and Answers/Notes/Worksheets – 4

      Tags: Class VII - Weather, Climate and Adaptations of Animals to Climate, CBSE Grade 7 Science Weather, Climate and Adaptations of Animals to Climate, Science - Class 7- Weather, Climate and Adaptations of Animals to Climate, NCERT Solutions for Class 7th: Ch 7 Weather, Climate and Adaptations of Animals to Climate, Class 7 CBSE Science Weather, Climate and Adaptations of Animals to Climate, CBSE class 7 science Weather, Climate and Adaptations of Animals to Climate, Grade 7 –Science - CBSE / NCERT – Weather, Climate and Adaptations of Animals to Climate Question Bank for seventh class, Question and Answers free worksheet PDF on Weather, Climate and Adaptations of Animals to Climate, Practice page and Important question and Extra question on Weather, Climate and Adaptations of Animals to Climate for seventh standard, How do polar bears survive the cold? What are the main features of the tropical rainforest? How animals have adapted themselves to overcome the competition for food and shelter in the rainforests?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 8 - Winds, Storms and Cyclones - Questions and Answers/Notes/Worksheets – 1

      Tags: Class VII - Winds, Storms and Cyclones, CBSE Grade 7 Winds, Storms and Cyclones, Science - Class 7- Winds, Storms and Cyclones, NCERT Solutions for Class 7th: Ch 8 Winds, Storms and Cyclones, Class 7 CBSE Science Winds, Storms and Cyclones, CBSE class 7 science Winds, Storms and Cyclones, Grade 7 –Science - CBSE / NCERT – Winds, Storms and Cyclones Question Bank for seventh class, Question and Answers free worksheet PDF on Winds, Storms and Cyclones, Practice page and Important question and Extra question on Winds, Storms and Cyclones for seventh standard, State true and false, Fill in the blanks on Winds, Storms and Cyclones for 7th standard, Which one of the following place is unlikely to be affected by a cyclone? (i) Chennai (ii) Mangaluru (Mangalore) (iii) Amritsar (iv) Puri, What is wind? What is anemometer? When you fly a kite, does the wind coming from your back help? Does the water give back heat when vapour condenses into liquid? What is the main cause of wind movement? Why we fill air into the bicycle tube? Where do thunderstorms usually develop? What do tornadoes look like? From where does the word monsoon derived? What does it mean? What is the direction wind in winter? What are the factors that contribute to the development of cyclones? What role does the wind play in the formation of storm? Why do the leaves of trees, flags and banners flutter when the wind is blowing? Is it difficult to ride a bicycle against the direction of the wind? Why? How can cyclones be predicted?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 8 - Winds, Storms and Cyclones - Questions and Answers/Notes/Worksheets – 2

      Tags: Class VII - Winds, Storms and Cyclones, CBSE Grade 7 Winds, Storms and Cyclones, Science - Class 7- Winds, Storms and Cyclones, NCERT Solutions for Class 7th: Ch 8 Winds, Storms and Cyclones, Class 7 CBSE Science Winds, Storms and Cyclones, CBSE class 7 science Winds, Storms and Cyclones, Grade 7 –Science - CBSE / NCERT – Winds, Storms and Cyclones Question Bank for seventh class, Question and Answers free worksheet PDF on Winds, Storms and Cyclones, Practice page and Important question and Extra question on Winds, Storms and Cyclones for seventh standard, Why is it easier to row the boat if there is wind coming from behind you? What is the difference between a Cyclone, Typhoon, and Hurricane? What is a tornado? Which regions of India are vulnerable to cyclones? How does air move? Explain why smoke always rises up? Hold a strip of paper, 20 cm long and 3 cm wide, between your thumb and forefinger. Now blow over the paper. What do you think will happen to the paper? Give reason. List some effective safety measures for cyclone. Explain why holes are made in hanging banners and hoardings. Why is it difficult to force the paper ball into the bottle? What are monsoon winds? Suggest two methods to find out wind direction at a given place. ‘A bicycle tube overfilled with air may burst’. Give reason. What is thunderstorm?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 8 - Winds, Storms and Cyclones - Questions and Answers/Notes/Worksheets – 3

      Tags: Class VII - Winds, Storms and Cyclones, CBSE Grade 7 Winds, Storms and Cyclones, Science - Class 7- Winds, Storms and Cyclones, NCERT Solutions for Class 7th: Ch 8 Winds, Storms and Cyclones, Class 7 CBSE Science Winds, Storms and Cyclones, CBSE class 7 science Winds, Storms and Cyclones, Grade 7 –Science - CBSE / NCERT – Winds, Storms and Cyclones Question Bank for seventh class, Question and Answers free worksheet PDF on Winds, Storms and Cyclones, Practice page and Important question and Extra question on Winds, Storms and Cyclones for seventh standard, Why are people advised not to stand near fast moving train? What are the destructions caused by cyclones? What would happen if high-speed winds blew over the roofs of buildings? Take a soft plastic bottle. Fill it with hot water. Empty the bottle and immediately cap it tightly. Place the bottle under running water. Shape of the bottle gets distorted. Explain why the bottle gets distorted? You want to buy a house. Would you like to buy a house having windows but no ventilators? Explain your answer. How will you help your neighbours in case cyclone approaches your village/town? State two experiences that made you think that air exerts pressure (other than those given in the text). What planning is required in advance to deal with the situation created by a cyclone? Explain the formation of a cyclone. What is a cyclone?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 8 - Winds, Storms and Cyclones - Questions and Answers/Notes/Worksheets – 4

      Tags: Class VII - Winds, Storms and Cyclones, CBSE Grade 7 Winds, Storms and Cyclones, Science - Class 7- Winds, Storms and Cyclones, NCERT Solutions for Class 7th: Ch 8 Winds, Storms and Cyclones, Class 7 CBSE Science Winds, Storms and Cyclones, CBSE class 7 science Winds, Storms and Cyclones, Grade 7 –Science - CBSE / NCERT – Winds, Storms and Cyclones Question Bank for seventh class, Question and Answers free worksheet PDF on Winds, Storms and Cyclones, Practice page and Important question and Extra question on Winds, Storms and Cyclones for seventh standard, Write a note on wind flow pattern. How a thunderstorm becomes a cyclone? List some action on the part of people in case of cyclone. What precautions would you take, if you are staying in a cyclone hit area? What precautions should we take if a storm is accompanied by lightning? Write an experiment to show that air exerts pressure.

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    • Science-Class 7 (CBSE/NCERT)-Chapter 8 - Winds, Storms and Cyclones - Questions and Answers/Notes/Worksheets – 5

      Tags: Class VII - Winds, Storms and Cyclones, CBSE Grade 7 Winds, Storms and Cyclones, Science - Class 7- Winds, Storms and Cyclones, NCERT Solutions for Class 7th: Ch 8 Winds, Storms and Cyclones, Class 7 CBSE Science Winds, Storms and Cyclones, CBSE class 7 science Winds, Storms and Cyclones, Grade 7 –Science - CBSE / NCERT – Winds, Storms and Cyclones Question Bank for seventh class, Question and Answers free worksheet PDF on Winds, Storms and Cyclones, Practice page and Important question and Extra question on Winds, Storms and Cyclones for seventh standard, High speed winds are accompanied by reduced air pressure. Prove the statement with help of an experiment. Explain with the help of an activity that an increase in the speed of air, results in the drop of pressure. Write an experiment to show that on heating the air expands and occupies more space. How technologies help people to be protected from cyclone? What are characteristics of Tornadoes? Write a note on structure of a cyclone.

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    • Science-Class 7 (CBSE/NCERT)-Chapter 9- Soil - Questions and Answers/Notes/Worksheets – 1

      Tags: Class VII - Soil, CBSE Grade 7 Soil, Science - Class 7- Soil, NCERT Solutions for Class 7th: Ch 9 Soil, Class 7 CBSE Science Soil, CBSE class 7 science Soil, Grade 7 –Science - CBSE / NCERT – Soil Question Bank for seventh class, Question and Answers free worksheet PDF on Soil, Practice page and Important question and Extra question on Soil for seventh standard, Fill in the blanks, True/False, Which type of soil is well aerated? Which soil has the highest percolation rate? Which soil has the least percolation rate? What is humus? What is soil? Name some soil pollutants. Which soil horizon contains humus? Which soil horizon has a lesser amount of humus but more of minerals? Which type of soil is the best for making pots, toys and statues? What kind of soil should be used for making matkas and surahis? Why the uppermost horizon is generally dark in colour? What is the role of humus in the soil? What is soil profile? What is loamy soil? What is bedrock? Which type of soil is best for growing wheat and gram? Which areas experience more severe soil erosion? Which type of soil is best for growing lentils?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 9- Soil - Questions and Answers/Notes/Worksheets – 2

      Tags: Class VII - Soil, CBSE Grade 7 Soil, Science - Class 7- Soil, NCERT Solutions for Class 7th: Ch 9 Soil, Class 7 CBSE Science Soil, CBSE class 7 science Soil, Grade 7 –Science - CBSE / NCERT – Soil Question Bank for seventh class, Question and Answers free worksheet PDF on Soil, Practice page and Important question and Extra question on Soil for seventh standard, Which type of soil is best for growing cotton? Wheat are grown in the fine clayey soils. Give reason. Classify the soil on the basis of the proportion of particles of various sizes. What is called soil moisture? State the factors on which nature of the soil depends? What is silt? Explain how soil is formed. Why do air above the soil shimmer on a hot summer day? Which type of soil is best for growing paddy? What is weathering? Which type of soil retains the highest amount of water and which retains the least? Which natural resource supports the growth of plants by holding the roots firmly and supplying water and nutrients? How is clayey soil useful for crops? What affect the soil profile and bring changes in the soil structure? Why is top soil known as the habitat of many living organisms? Why is the topsoil important for plant growth? Why there is a demand to ban the polythene bags and plastics? What are called horizons?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 9- Soil - Questions and Answers/Notes/Worksheets – 3

      Tags: Class VII - Soil, CBSE Grade 7 Soil, Science - Class 7- Soil, NCERT Solutions for Class 7th: Ch 9 Soil, Class 7 CBSE Science Soil, CBSE class 7 science Soil, Grade 7 –Science - CBSE / NCERT – Soil Question Bank for seventh class, Question and Answers free worksheet PDF on Soil, Practice page and Important question and Extra question on Soil for seventh standard, What are the properties of loamy soil? What are the properties of clayey soil? Why is soil regarded as one of the most important natural resources? Why is soil an inseparable part of our life? What are the properties of sandy soil? Sketch the cross section of soil and label the various layers. Razia conducted an experiment in the field related to the rate of percolation. She observed that it took 40 min for 200 mL of water to percolate through the soil sample. Calculate the rate of percolation. List the differences between clayey soil and sandy soil. Explain how soil pollution and soil erosion could be prevented. Describe the different layers of soil profile.

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    • Science-Class 7 (CBSE/NCERT)-Chapter 10- Respiration in Organisms- Questions and Answers/Notes/Worksheets – 1

      Tags: Class VII - Respiration in Organisms, CBSE Grade 7 Science Respiration in Organisms, Science - Class 7- Respiration in Organisms, NCERT Solutions for Class 7th: Ch 10 Respiration in Organisms, Class 7 CBSE Science Respiration in Organisms, CBSE class 7 science Respiration in Organisms, Grade 7 –Science - CBSE / NCERT – Respiration in Organisms Question Bank for seventh class, Question and Answers free worksheet PDF on Respiration in Organisms, Practice page and Important question and Extra question on Respiration in Organisms for seventh standard, State true and false, Fill in the blanks on Respiration in Organisms for 7th standard, What are some common uses of Yeast? Name an organism that can survive in the absence of air. How do earthworms breathe? What does a breath mean? What is cell? What are all organisms made up of? Name the respiratory organ of birds. What forms the floor of the chest cavity? What are the end products of anaerobic respiration? What is produced during anaerobic respiration in muscles that causes cramps? What is cellular respiration? What is breathing rate? Why smoking should be avoided? What are spiracles? Why we should eat regularly? What is a stomata and what is its function? What is breathing?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 10- Respiration in Organisms- Questions and Answers/Notes/Worksheets – 2

      Tags: Class VII - Respiration in Organisms, CBSE Grade 7 Science Respiration in Organisms, Science - Class 7- Respiration in Organisms, NCERT Solutions for Class 7th: Ch 10 Respiration in Organisms, Class 7 CBSE Science Respiration in Organisms, CBSE class 7 science Respiration in Organisms, Grade 7 –Science - CBSE / NCERT – Respiration in Organisms Question Bank for seventh class, Question and Answers free worksheet PDF on Respiration in Organisms, Practice page and Important question and Extra question on Respiration in Organisms for seventh standard, What is inhalation and exhalation? How do frogs breathe? Name some animals that breathe through lungs. Why do mountaineers carry oxygen with them? Why should we cover our nose while sneezing? How does respiration occur in earthworms? What role does hair present in the nasal cavity play in the process of respiration? What is normal range of breathing rate per minute in an average adult person at rest? Why do we get muscle cramps after heavy exercise? What happens during exhalation? What happens during inhalation? What happens to the air we breathe in? How does respiration work in yeast? Why are yeasts used to make wine and beer? What is the function of gills in fish? How do plant roots respire?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 10- Respiration in Organisms- Questions and Answers/Notes/Worksheets – 3

      Tags: Class VII - Respiration in Organisms, CBSE Grade 7 Science Respiration in Organisms, Science - Class 7- Respiration in Organisms, NCERT Solutions for Class 7th: Ch 10 Respiration in Organisms, Class 7 CBSE Science Respiration in Organisms, CBSE class 7 science Respiration in Organisms, Grade 7 –Science - CBSE / NCERT – Respiration in Organisms Question Bank for seventh class, Question and Answers free worksheet PDF on Respiration in Organisms, Practice page and Important question and Extra question on Respiration in Organisms for seventh standard, Why do we feel hungry after a physical activity? What is anaerobic respiration? Do the plants also respire? When we release our breath after holding it for some time, we had to breathe heavily. Why it was so? How does exchange of gases take place in insects? Explain respiration in insects. When and where does anaerobic respiration occur in humans? What is the percentage of oxygen and carbon dioxide in inhaled and exhaled air? Why do we get relief from cramps after a hot water bath or a massage? Why do we often sneeze when we inhale a lot of dust-laden air? How does respiration occur in plants? How do the plants breathe in oxygen? What parts of the human body are involved in respiration?

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    • Science-Class 7 (CBSE/NCERT)-Chapter 10- Respiration in Organisms- Questions and Answers/Notes/Worksheets – 4

      Tags: Class VII - Respiration in Organisms, CBSE Grade 7 Science Respiration in Organisms, Science - Class 7- Respiration in Organisms, NCERT Solutions for Class 7th: Ch 10 Respiration in Organisms, Class 7 CBSE Science Respiration in Organisms, CBSE class 7 science Respiration in Organisms, Grade 7 –Science - CBSE / NCERT – Respiration in Organisms Question Bank for seventh class, Question and Answers free worksheet PDF on Respiration in Organisms, Practice page and Important question and Extra question on Respiration in Organisms for seventh standard, How do the cockroaches breathe? Why does an athlete breathe faster and deeper than usual after finishing the race? Why do we respire? List the similarities and differences between aerobic and anaerobic respiration. How do we breathe? Take three test-tubes. Fill ¾ th of each with water. Label them A, B and C. Keep a snail in test-tube A, a water plant in test-tube B and in C, keep snail and plant both. Which test-tube would have the highest concentration of CO2? Whales and dolphins often come up to the water surface. They even release a fountain of water sometimes while moving upwards. Why do they do so?  Explain the mechanism of breathing with the help of an activity.

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