Page 106 - Viva ICSE Science 5 : E-book

4. Which of the following is a man-made source of energy?
(a) Solar energy (b) Electricity

(c) Heat energy (d) Light energy

D. Answer the following questions.

1. What according to science is work? Give two examples when work done is
zero.

2. Defi ne energy. How do we use energy?

3. Name any fi ve types of energy.
4. What is potential energy? Explain by giving an example.

5. Name the types of energy that we get from sun. Give their uses.

6. What are non-renewable sources of energy? Give examples.

THINK AND ANSWER

1. Think of the various types of energies you witness at your home and discuss them in
class.
2. Give one word for the following.
a. The energy possessed by a running steam engine
b. The energy possessed by a guitar
c. The energy possessed by a body due to its motion

TALK ABOUT

Non-renewable energy sources are limited and soon they will be used up completely. Discuss in
class about the importance of these sources and ways to limit their use.

LINK AND LEARN

Prepare a report on 'Natural Resources of India'. You can use Internet and refer your Social Studies
book to make the report.

92