Chapter 11: Nature's Treasures

Let us enhance our learning

1. Match the jumbled words with their corresponding natural resources shown in Fig. 11.9. Classify them as renewable or non-renewable.

2. State whether the following statements are True [T] or False [F]. If False, correct them.

3. Fill in the blanks using the most appropriate option—

4. Classify the following as renewable or non-renewable resources—coal, natural gas, forests and minerals.

5. Why do we say that petroleum is a non-renewable resource?

6. It is difficult to regrow forests. Justify this statement.

7. Make a list of five daily activities in which you use natural resources. Suggest ways by which you can reduce their use.

8. List four activities that are possible due to the presence of air.

9. How can you contribute towards enhancing the green cover of your locality? Make a list of actions to be taken.

10. Answer the following questions based on the illustration where food is being cooked in a solar cooker:

(i) What type of energy is being used for cooking?
(ii) Name one benefit and one drawback of using this type of energy for cooking.

11. Cutting down trees on a large scale impacts the quality of the soil. Why do you think it is so?

12. Explain two ways in which human activities pollute the air. Propose one action which can help in reducing air pollution.

13. A family uses solar panels, a gas stove, and a windmill. What would happen if there were no sunlight for a week?

14. Fill up the blanks using the following terms—

15. Discuss the felling of trees for industrial/housing requirements.

16. Propose a plan to use less water in your school.