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Science ·Class 7 Science

Curiosity Class 7 Science Book Solutions

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RBSEGuide
· Jun 16, 2026 · Reviewed & updated Sep 17, 2026 · 19 min read

Class 7 Science Curiosity Solutions

Curiosity Class 7 Solutions

Class 7 Curiosity Solutions: NCERT Solutions for Class 7 Science Curiosity

Class 7 Science Curiosity Chapter 1 The Ever Evolving World of Science Question Answer

  1. Look at the answers below. Your task is to come up with a curious, creative, and fun question or situations Class 7
  2. The Ever Evolving World of Science Class 7 Notes

Class 7 Science Curiosity Chapter 2 Exploring Substances Acidic Basic and Neutral Question Answer

  1. Activity 2.1 Let us explore Table 2.1 Testing the nature of samples with blue and red litmus papers Class 7
  2. Activity 2.2 Let us relate and explore Find out and write the names of the most common acids Class 7
  3. Activity 2.4 Let us find out Table 2.3 Testing the nature of samples Class 7
  4. A solution turns the red litmus paper to blue. Excess addition of which of the following solution Class 7
  5. You are provided with three unknown solutions labelled A, B, and C Class 7
  6. Observe and analyse Figs. 2.13, 2.14, and 2.15, in which red rose extract paper Class 7
  7. A liquid sample from the laboratory was tested using various indicators Class 7
  8. Manya is blindfolded. She is given two unknown solutions to test and determine Class 7
  9. Could you suggest various materials which can be used for writing the message on the white sheet Class 7
  10. Grape juice was mixed with red rose extract; the mixture got a tint of red colour. Class 7
  11. Keerthi wrote a secret message to her grandmother on her birthday using orange juice Class 7
  12. How can natural indicators be prepared? Explain by giving an example. Class 7
  13. Three liquids are given to you. One is vinegar, another is a baking soda solution, and the third is a sugar solution Class 7
  14. The extract of red rose turns the liquid X to green. What will the nature of liquid X be? Class 7
  15. Observe and analyse the information given in the following flowchart. Complete the missing information. Class 7
  16. Exploring Substances Acidic Basic and Neutral Class 7 Notes
  17. Exploring Substances Acidic Basic and Neutral Class 7 MCQ
  18. Exploring Substances Acidic Basic and Neutral Class 7 Assertion and Reason Questions
  19. Exploring Substances Acidic Basic and Neutral Class 7 Fill in the Blanks
  20. Exploring Substances Acidic Basic and Neutral Class 7 Very Short Question Answer
  21. Exploring Substances Acidic Basic and Neutral Class 7 Short Question Answer
  22. Exploring Substances Acidic Basic and Neutral Class 7 Long Question Answer

Class 7 Science Curiosity Chapter 3 Electricity Circuits and Their Components Question Answer

  1. Can you help Nihal by adding some more uses to his lists? Also, suggest some other ways of grouping Class 7
  2. Activity 3.1 Let us explore (Page 24) Why does the torch lamp glow in one position of its switch? Class 7
  3. Activity 3.2 Let us observe (Page 25) In a torch, we generally use more than one cell. Class 7
  4. Choose the incorrect, statement. A switch is the source of electric current in a circuit. Class 7
  5. Observe Fig. 3.16 With which material connected between the ends A and B, the lamp will not glow? Class 7
  6. In Fig. 3.17 if the filament of one of the lamps is broken, will the other glow? Justify your answer. Class 7
  7. A student forgot to remove the insulator covering from the connecting wires while making a circuit. Class 7
  8. In Fig. 3.18 If S2 is in 'ON' position, S1 is in 'OFF' position, which lamp(s) will glow? Class 7
  9. Vidyut has made the circuit as shown in Fig. 3.19. Even after closing the circuit, the lamp does not glow Class 7
  10. In Fig. 3.20 in which case(s) the lamp will not glow when the switch is closed? Class 7
  11. Suppose the ' + ' and ' - ' symbols cannot be read on a battery. Suggest a method to identify Class 7
  12. You are given six cells marked A, B,C, D,E and F. Some of these are working Class 7
  13. An LED requires two cells in series to glow. Tanya made the circuit as shown in Fig. 3.21. Class 7
  14. Electricity Circuits and Their Components Class 7 Notes
  15. Electricity Circuits and Their Components Class 7 MCQ
  16. Electricity Circuits and Their Components Class 7 Assertion and Reason Questions
  17. Electricity Circuits and Their Components Class 7 Fill in the Blanks
  18. Electricity Circuits and Their Components Class 7 Very Short Question Answer
  19. Electricity Circuits and Their Components Class 7 Short Question Answer
  20. Electricity Circuits and Their Components Class 7 Long Question Answer

Class 7 Science Curiosity Chapter 4 The World of Metals and Non metals Question Answer

  1. Activity 4.1 Let us explore Table 4.1 Appearance, hardness, and effect of hammering Class 7
  2. Activity 4.2 Let us investigate Do you notice any difference in the sound Class 7
  3. Activity 4.3 Let us investigate Which of the spoons get hotter? Class 7
  4. Activity 4.4 Let us design and create Table 4.2 Conduction of electricity by different Class 7
  5. Activity 4.6 Let us investigate (Demonstration activity) (Page 51) What do you observe ? Class 7
  6. Activity 4.7 Let us experiment (Demonstration activity) Class 7
  7. Activity 4.8 Let us explore What do you observe? Class 7
  8. Let Us Enhance Our Learning Which metal is commonly used to make food packaging Class 7
  9. State with reason(s) whether the following statements are True [T] or False [F] Aluminium and copper are examples class 7
  10. Why are only a few metals suitable for making jewellery? Class 7
  11. Match the uses of metals and nonmetals given in Column I with the jumbled names of metals Class 7
  12. What happens when oxygen reacts with magnesium and sulfur. What are the main differences Class 7
  13. You are provided with the following materials. Discuss which material would be your choice Class 7
  14. You are provided with three iron nails, each dipped in oil, water and vinegar. Which iron nail will not rust, and why? Class 7
  15. How do the different properties of metals and non-metals determine their uses in everyday life? Class 7
  16. One of the methods of protecting iron from getting rusted is to put a thin coating Class 7
  17. An ironsmith heats iron before making tools. Why is heating necessary in this process? Class 7
  18. The World of Metals and Non metals Class 7 Notes
  19. The World of Metals and Non metals Class 7 MCQ
  20. The World of Metals and Non metals Class 7 Assertion and Reason Questions
  21. The World of Metals and Non metals Class 7 Fill in the Blanks
  22. The World of Metals and Non metals Class 7 Very Short Question Answer
  23. The World of Metals and Non metals Class 7 Short Question Answer
  24. The World of Metals and Non metals Class 7 Long Question Answer

Class 7 Science Curiosity Chapter 5 Changes Around Us Physical and Chemical Question Answer

  1. These students are describing some changes. What kinds of changes are they talking about? Class 7
  2. Activity 5.1 Let us think and reflect Table 5.1 Some changes observed around us Class 7
  3. Activity 5.2 Let us create and discuss Is there any similarity in changes listed in A, B and C? Class 7
  4. Activity 5.4 Let us experiment What do you observe? Class 7
  5. Activity 5.5 Let us investigate (Pages 62-63) What happens to the candle flames in the two cases? Class 7
  6. Activity 5.8 Let us think Table 5.2 Can changes be reversed? Class 7
  7. Which of the following statements are the characteristics of a physical change? Class 7
  8. Predict which of the following changes can be reversed and which cannot be reversed Class 7
  9. State whether the following statements are True or False. Class 7
  10. Fill in the blanks in the following statements: Nalini observed that the handle. Class 7
  11. Are the changes of water to ice and water to steam, physical or chemical? Explain. Class 7
  12. Is curdling of milk a physical or chemical change? Justify your statement. Class 7
  13. Natural factors such as wind rain etc. help in the formation of soil from rocks. Is this change physical Class 7
  14. Read the following story titled Eco-friendly Prithvi and tick the most appropriate option(s) given in the brackets Class 7
  15. Some changes are given here. Write physical changes in the area marked 'A' and chemical changes in the area marked 'B' Class 7
  16. The experiments shown in Fig. 5.11a, b, c, and d were performed. Find out in which case(s) did lime water Class 7
  17. Invisible Ink with Lemon Juice Can the changes be reversed? Class 7
  18. Reducing Landslides and Rock Erosion Class 7
  19. Kitchen Activities Reversible and Irreversible Changes Class 7
  20. What do you observe after an hour ? Class 7
  21. Chameleons Changing Colour Class 7
  22. Changes Around Us Physical and Chemical Class 7 Notes
  23. Changes Around Us Physical and Chemical Class 7 MCQ
  24. Changes Around Us Physical and Chemical Class 7 Assertion and Reason Questions
  25. Changes Around Us Physical and Chemical Class 7 Fill in the Blanks
  26. Changes Around Us Physical and Chemical Class 7 Very Short Question Answer
  27. Changes Around Us Physical and Chemical Class 7 Short Question Answer

Class 7 Science Curiosity Chapter 6 Adolescence A Stage of Growth and Change Question Answer

  1. Activity 6.1 Let US discuss Table 6.1 Most common changes during growing up Class 7
  2. Activity 6.2 Let us list Table 6.2 Emotional changes, their probable effects on behaviour, and ways Class 7
  3. Activity 6.3 Let us list Table 6.3 Food sources, nutrients present in them, and functions of these nutrients Class 7
  4. Activity 6.4 Let us spread awareness Table 6.4 Do's and Don'ts to be followed on social media Class 7
  5. Ramesh, an 11-year-old boy, developed a few pimples on his face. His mother told him that this is because of ongoing Class 7
  6. Which of the following food groups would be a better option for adolescents and why? Class 7
  7. Unscramble the underlined word in the following sentences The discharge of blood in adolescent girls which generally Class 7
  8. Shalu told her friend, "Adolescence brings only physical changes, like growing taller or developing body hair. Class 7
  9. During a discussion in the class, some of the students raised the following points. What questions would you ask Class 7
  10. Adolescents sometimes experience mood swings. On some days. Class 7
  11. While using a toilet, Mohini noticed that used sanitary pads were scattered near the bin. She got upset and shared Class 7
  12. Mary and Manoj were classmates and good friends. On turning 11 Mary developed a little bulge on the front of her neck Class 7
  13. During adolescence the boys and girls undergo certain physical changes, a few of which are given below Class 7
  14. Adolescence A Stage of Growth and Change Class 7 Notes
  15. Adolescence A Stage of Growth and Change Class 7 MCQ
  16. Adolescence A Stage of Growth and Change Class 7 Assertion and Reason Questions
  17. Adolescence A Stage of Growth and Change Class 7 Fill in the Blanks
  18. Adolescence A Stage of Growth and Change Class 7 Very Short Question Answer
  19. Adolescence A Stage of Growth and Change Class 7 Short Question Answer
  20. Adolescence A Stage of Growth and Change Class 7 Long Question Answer

Class 7 Science Curiosity Chapter 7 Heat Transfer in Nature Question Answer

  1. How does heat get transferred in these materials Class 7
  2. Why is the smoke going up. How does heat transfer take place in liquids? Class 7
  3. I wonder how heat from the fire reaches us? Class 7
  4. How does water seep through the surface of the Earth Class 7
  5. Let Us Enhance Our Learning. Choose the correct option in each case. Class 7
  6. A shopkeeper serves you cold lassi in a tumbler. By chance, the tumbler had a small leak. Class 7
  7. State with reason(s) whether the following statements are True [T] or False [F] Heat transfer takes place in solids Class 7
  8. Some ice cubes placed in a dish melt into water after sometime. Where do the ice cubes get heat for this transformation? Class 7
  9. A burning incense stick is fixed, pointing downwards. In which direction would the smoke from the incense stick move? Class 7
  10. Two test tubes with water are heated by a candle flame as shown in Fig. 7.16. Which thermometers (Fig. 7.16a or Fig. 7.16b) Class 7
  11. Why are hollow bricks used to construct the outer walls of houses in hot regions? Class 7
  12. Explain how large water bodies prevent extreme temperature in areas around them. Class 7
  13. Explain how water seeps through the surface of the Earth and gets stored as groundwater. Class 7
  14. The water cycle helps in the redistribution and replenishment of water on the Earth. Justify the statement. Class 7
  15. Heat Transfer in Nature Class 7 Notes
  16. Heat Transfer in Nature Class 7 MCQ
  17. Heat Transfer in Nature Class 7 Assertion and Reason Questions
  18. Heat Transfer in Nature Class 7 Fill in the Blanks
  19. Heat Transfer in Nature Class 7 Very Short Question Answer
  20. Heat Transfer in Nature Class 7 Short Question Answer
  21. Heat Transfer in Nature Class 7 Long Question Answer

Class 7 Science Curiosity Chapter 8 Measurement of Time and Motion Question Answer

  1. How was time measured when there were no clocks and watches Class 7
  2. Activity 8.3 Let us identify (Page 112) Look at the wall clock shown in Fig. 8.9 carefully Class 7
  3. Activity 8.4 Let us calculate (Page 114) Table 8.2 Finding the speed of trains Class 7
  4. Calculate the speed of a car that travels 150 metres in 10 seconds. Express your answer in km/h. Class 7
  5. A runner completes 400 metres in 50 seconds. Another runner completes the same distance in 45 seconds. Class 7
  6. A train travels at a speed of 25 m/s and covers a distance of 360 km. How much time does it take? Class 7
  7. A train travels 180 km in 3 h. Find its speed in km/h Class 7
  8. The fastest galloping horse can reach the speed of approximately 18 m/s. How does this compare to the speed Class 7
  9. Distinguish between uniform and non-uniform motion using the example of a car moving on a straight Class 7
  10. Data for an object covering distances in different intervals of time are given in the following table. Class 7
  11. A car covers 60 km in the first hour, 70 km in the second hour, and 50 km in the third hour. Is the motion uniform? Class 7
  12. Which type of motion is more common in daily life-uniform or nonuniform? Provide three examples Class 7
  13. Data for the motion of an object are given in the following table. State whether the speed of the object Class 7
  14. A vehicle moves along a straight line and covers a distance of 2 km. In the first 500 m it moves with a speed of 10 m/s Class 7
  15. Measurement of Time and Motion Class 7 Notes
  16. Measurement of Time and Motion Class 7 MCQ
  17. Measurement of Time and Motion Class 7 Assertion and Reason Questions
  18. Measurement of Time and Motion Class 7 Fill in the Blanks
  19. Measurement of Time and Motion Class 7 Very Short Question Answer
  20. Measurement of Time and Motion Class 7 Short Question Answer
  21. Measurement of Time and Motion Class 7 Long Question Answer

Class 7 Science Curiosity Chapter 9 Life Processes in Animals Question Answer

  1. How does the food move down? Class 7
  2. I have seen cows keep chewing the food even when they are not actively. Class 7
  3. Complete the journey of food through the alimentary canal by filling up the boxes with appropriate parts Class 7
  4. Sahil placed some pieces of chapati in test tube A. Neha placed chewed chapati in test tube B and Santushti took boiled Class 7
  5. What is the role of the diaphragm in breathing? Class 7
  6. Anil claims to his friend Sanvi that respiration and breathing are the same process. What question(s) Class 7
  7. Which of the following statement is correct and why Anu We inhale air. Class 7
  8. We often sneeze when we inhale a lot of dust-laden air. What can be possible explanations for this? Class 7
  9. Paridhi and Anusha of Grade 7 started running for their morning workout. After they completed their running Class 7
  10. Yadu conducted an experiment to test his idea. He took two test tubes, A and B and added a pinch of rice flour Class 7
  11. Rakshita designed an experiment taking two clean test tubes, A and B and filled them with lime water as shown in the figure Class 7
  12. What are the good practices for maintaining oral hygiene? Try to gather information on the same from books Class 7
  13. Find out different ways to maintain a healthy digestive system. Suggest some food items that help to maintain good Class 7
  14. What is air quality and AQI? Find out the effect of air quality on the respiratory systems of people Class 7
  15. Try to read about the box-breathing technique (Fig. 9.17). What are its benefits? Class 7
  16. Both birds and mammals have lungs for breathing, but birds can fly at high altitudes where oxygen Class 7
  17. Life Processes in Animals Class 7 Notes
  18. Life Processes in Animals Class 7 MCQ
  19. Life Processes in Animals Class 7 Assertion and Reason Questions
  20. Life Processes in Animals Class 7 Fill in the Blanks
  21. Life Processes in Animals Class 7 Very Short Question Answer
  22. Life Processes in Animals Class 7 Short Question Answer
  23. Life Processes in Animals Class 7 Long Question Answer

Class 7 Science Curiosity Chapter 10 Life Processes in Plants Question Answer

  1. How do plants obtain the food they need to grow? Class 7
  2. Activity 10.5 Let us explore (Page 145) Fig. 10.4 Activity showing the release of oxygen during photosynthesis Class 7
  3. How does sunlight contribute in the production of starch in plants? Class 7
  4. Which gas from the air is essential in the process of food preparation in plants? Class 7
  5. Let Us Enhance Our Learning (Pages 150-152) Complete the following table. Class 7
  6. Imagine a situation where all the organisms that carry out photosynthesis on the Earth have disappeared Class 7
  7. A potato slice shows the presence of starch with iodine solution. Where does the starch in potatoes come from? Class 7
  8. Does the broad and flat structure of leaves make plants more efficient for photosynthesis? Justify your answer. Class 7
  9. X is broken down using Y to release carbon dioxide Z and energy. Class 7
  10. Krishna set-up an experiment with two potted plants of same size and placed one of them in sunlight Class 7
  11. Vani believes that carbon dioxide is essential for photosynthesis. She puts an experimental setup Class 7
  12. Ananya took four test tubes and filled three- fourth of each test tube with water. She labelled them A, B, C, and D Class 7
  13. Design an experiment to observe if water transportation in plants is quicker in warm or cold conditions. Class 7
  14. Photosynthesis and respiration are essential to maintain balance in nature. Discuss. Class 7
  15. Life Processes in Plants Class 7 Notes
  16. Life Processes in Plants Class 7 MCQ
  17. Life Processes in Plants Class 7 Assertion and Reason Questions
  18. Life Processes in Plants Class 7 Fill in the Blanks
  19. Life Processes in Plants Class 7 Very Short Question Answer
  20. Life Processes in Plants Class 7 Short Question Answer
  21. Life Processes in Plants Class 7 Long Question Answer

Class 7 Science Curiosity Chapter 11 Light Shadows and Reflections Question Answer

  1. Which objects give off their own light ? Class 7
  2. Activity 11.3 Let us experiment (Page 156) Table 11.1 Light through different materials Class 7
  3. Activity 11.4 Let us explore (Page 158) Table 11.2 Observation of shadows Class 7
  4. Activity 11.5 Let us investigate (Pages 159-160)What can you do to redirect light on the wall Class 7
  5. Activity 11.6 Let us experiment (Page 160) Now, when you place the mirror in the path of the light beam Class 7
  6. Activity 11.8: Let us experiment, Stand at different distances from the mirror. Class 7
  7. Activity 11.10 Let us construct (Page 163) Do the images seen in the camera show the colours of the objects Class 7
  8. Let Us Enhance Our Learning (Pages 165-167)Which of the following are luminous objects? Class 7
  9. Sahil, Rekha, Patrick, and Qasima are trying to observe the candle flame through the pipe as shown in Fig. 11.16. Class 7
  10. Look at the images shown in Fig. 11.17 and select the correct image showing the shadow formation of the boy. Class 7
  11. The shadow of a ball is formed on a wall by placing the ball in front of a fixed torch as shown in Fig. 11.18 Class 7
  12. Based on Fig. 11.18, match the position of the torch in Column A with the characteristics of the ball's shadow in Column B. Class 7
  13. Write your name on a piece of paper and hold it in front of a plane mirror such that the paper is parallel to the mirror Class 7
  14. Measure the length of your shadow at 9 AM, 12 PM, and 4 PM with the help of your friend. Write down your observations Class 7
  15. On the basis of following statements, choose the correct option.Statement A Image formed by a plane mirror is laterally inverted Class 7
  16. Suppose you are given a tube of the shape shown in the Fig.11.20 and two plane mirrors smaller than the diameter Class 7
  17. Light Shadows and Reflections Class 7 Notes
  18. Light Shadows and Reflections Class 7 MCQ
  19. Light Shadows and Reflections Class 7 Assertion and Reason Questions
  20. Light Shadows and Reflections Class 7 Fill in the Blanks
  21. Light Shadows and Reflections Class 7 Very Short Question Answer
  22. Light Shadows and Reflections Class 7 Short Question Answer
  23. Light Shadows and Reflections Class 7 Long Question Answer

Class 7 Science Curiosity Chapter 12 Earth Moon and the Sun Question Answer

  1. Does the Sun move in the sky? Or Does the Earth move? Class 7
  2. Activity 12.1 Let us explore (Page 170) While you are sitting on the moving merry go round look around you. Class 7
  3. Activity 12.2 Let us explore (Pages 171-172) Shine light from the torch placed at some distance, say 1.5 metres, on the globe Class 7
  4. Activity 12.3: Let us explore, Do you observe that the Big Dipper appears to move. Class 7
  5. Let Us Enhance Our Learning (Pages 186) In Fig. 12.17, how many hours of sunlight do the North Pole and the South Class 7
  6. Padmashree saw the Orion constellation nearly overhead at 8 pm yesterday. When will she see Orion overhead today Class 7
  7. Nandhini saw a group of stars rising at midnight on 21 June. When will she see the same group of stars rising Class 7
  8. Abhay noticed that when it was daytime in India, his uncle who was in the USA was generally sleeping as it was nighttime there Class 7
  9. Four friends used the following ways to see the solar eclipse. Who among them was being careless Class 7
  10. The Moon is much smaller than the Sun yet it can block the Sun completely from our view during Class 7
  11. The Indian cricket team matches in Australia are often held in December. Should they pack winter Class 7
  12. Why do you think lunar eclipses can be seen from a large part of the Earth when they happen, but total solar eclipse Class 7
  13. If the Earth's axis were not tilted with respect to the axis of revolution, explain what would be the effect on seasons Class 7
  14. Earth Moon and the Sun Class 7 Notes
  15. Earth Moon and the Sun Class 7 MCQ
  16. Earth Moon and the Sun Class 7 Assertion and Reason Questions
  17. Earth Moon and the Sun Class 7 Fill in the Blanks
  18. Earth Moon and the Sun Class 7 Very Short Question Answer
  19. Earth Moon and the Sun Class 7 Short Question Answer
  20. Earth Moon and the Sun Class 7 Long Question Answer