Page 186 - New Medley 2_Semester 2

Place a book in front of a table fan.

Switch on the fan. What do you see?

How does it happen?

Air takes up space

When you blow air into a balloon, it

becomes larger. Why?

It becomes larger because the air blown by

you fills the space inside the balloon.

Take an empty glass and a tub. Half-fill the
tub with water. Turn the glass upside down

and push it into the water. What happens?

Now, tilt the glass a

little. What do you
see?

The glass goes into the water giving

out air bubbles. This shows that the

space inside the glass was occupied by
the air.

Air has weight

Take two footballs of the same size.

Fill air in one of them. Weigh both
of them on a balance. Which one is

heavier? Why?

The football filled with air is

heavier. It shows that air has

weight.

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