Air is all around us and fills up space. It has weight and is needed for breathing, burning, flying, living, filling balloons and moving things like kites and windmills. The document discusses that air surrounds us as breeze or wind, fills up space inside balloons, has weight which can be seen when comparing full and empty balloons, and is used by humans, plants, animals and in transportation.

1. AIR
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2. Learning Objectives
• Air is all around us
• Air fills up space
• Air has weight
• Uses of Air
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3. Air is All Around Us
• Air is all around us.
• When air moves gently, it is called breeze.
• When air moves fast, it is called wind.
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4. Air Fills Up Space
• Many things can be filled with air.
• When air is blown inside a balloon, the balloon becomes bigger and
bigger. This is because air takes up the space inside the balloon.
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5. Air Has Weight
• Air has weight.
• When a balloon is blown-up it
becomes heavier than a flat one.
This is because air is heavy.
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6. Uses of Air
Humans need air to
breathe.
Air is needed for
burning.
Birds fly because there is
air.
Plants and animals
need air to live.
We fill air in balloons,
footballs and cycle
tyres.
Air is used to move things
like kite, helicopter,
sailboat and windmill.
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