Page 85 - Science Class 6 Times Publication

Chapter
Chapter

8 ELECTRICITY

Estimated periods:4
OBJECTIVES

At the end of the lesson, the students will be able to :
Ü dene electricity;

Ü mention sources of electricity;

Ü demonstrate simple electric circuit;
Ü dene and demonstrate conductors and insulators.

MIND OPENERS
Ü Which energy is used for running fridge, micro oven,
computers, television and washing machine?
Ü Can you tell some devices which produce electricity?
Ü Can electric current pass through metal and plastics? Discuss.

Introduction
We run various devices such as radio, television, computer, fridge,
fan, heater, etc by using electricity. Electricity is our good friend.
Nowadays, it is an essential part of our life. We can convert electricity
into heat energy, light energy, chemical energy and mechanical
energy.

Thus, electricity is a kind of energy which can be converted into heat,
light, mechanical, sound, etc by using suitable devices.
Sources of electricity

The devices that produce electricity are called sources of electricity.
Cell, dynamo, and generator are the sources of electricity.

Cell

A cell is a device that changes chemical energy into electrical energy.
A group of cells is called battery. Cells are of various types. Here, we
discuss only three types of cells.

Times' Crucial Science and Environment 81 Book 6