Page 57 - Science Class 6 Times Publication

Chapter
Chapter

5 LIGHT

Estimated periods:7

OBJECTIVES

At the end of the lesson, the students will be able to:
Ü explain light as a form of energy;
t
Ü ell the sources of light;
Ü dene and tell examples of transparent, translucent and opaque

objects;
Ü ell the meaning of transmission of light.
t

MIND OPENERS
Ü Can you see at dark? If not, why?
Ü What helps you to see the things?
Ü What does the sun provide us? Discuss.

Introduction

We cannot see in the dark. We can see the objects only when the light
from the objects falls on our eyes. Hence, the light helps us see things.
The sun is the main source of light. The light from the sun falls upon
the objects such as book, pen, table, road, building, etc. These objects

then reect the sunlight and make the reected light fall into our
eyes. Then, we see objects. Hence, light is a form of energy that gives
the sensation of vision.

Sources of light

n
a
s
The substances which can emit light are known as sources of light.
The sources of light can be classied as natural sources of light and

ral source

articial sources of light.

Times' Crucial Science and Environment 53 Book 6