Page 78 - ScienceStd4

Chapter Five

Energy
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Introduction

There are various forms of energy used in our daily lives. In
this chapter, you will learn about the forms and uses of heat,
light, and sound energy. Additionally, you will conduct simple
experiments on some types of energy. The competencies
developed will enable you to identify sources of energy and
use energy efficiently in everyday life.

Think How life could be without energy

Meaning of energy

In our environment there are various sources of energy. These
energies can cause work to be done. Therefore, energy is the

ability that enables various tasks to be done.

Forms of energy

There are various forms of energy that we use in our daily lives.

These include heat, light and sound energy.

Heat energy

Heat is a form of energy that is transferred between objects
with different temperatures. It comes from natural sources such

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SCIENCE AND TECHNOLOGY STD 4.indd 71 14/01/2025 18:38