Page 117 - ICSE Science 3 : E-book

E. Answer the following questions.

1. Why energy from the sun is considered the cleanest source of energy?

2. What is the importance of the sun for living things on earth?

3. List any 5 uses of solar energy.

4. How is the sun responsible for the changes in seasons?

5. Defi ne sources of energy. What are its two types?

6. Why is conservation of energy needed? List 5 ways to conserve energy.

THINK AND ANSWER

1. What will happen if all the non-renewable resources are used up completely?

2. Why is the sun necessary for the living things on the earth?

TALK ABOUT

1. Discuss how the use of solar energy can save electricity and our environment.

2. What steps or measures should we take to save energy?

LINK AND LEARN

With the help of your teacher and parents, learn about the types of plants grown in diff erent
seasons in our country. Make a small report and show it to your teacher.

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