Page 52 - full
P. 52

11 air around us

  Learning Objectives

 Air takes up space
 Air Has Weight
 Uses of Air

          Let’s Start Learning

The air is all around us but we cannot se it. We can feel air when it moves.
The moving air is called wind.

                                                      Try Your Bits

                                                                      How does a kite fly?

                                     Fact  We need air to breathe and survive.
                                     Time
A kite flies with A boat sails with

the help of air.  help of air.

Air takes up space

When we blow air into a balloon it gets bigger and bigger. Have you ever
wondered why is it happened? Come and let's try it!
Take a balloon and blow air into it. Remember to hold the mouth of balloon
tightly. What do you observe now? You will see that the balloon becomes

html5 e=mc2 For the Teacher Discuss in the class about the concept of air with the help of some examples.

                            Give them examples of air, like air in the mouth, air in balloon, etc.

56
   47   48   49   50   51   52   53   54   55   56   57