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Uses of air
• Air is filled in balloons and in vehicle tyres.
• Air is needed to create fire.
• Air runs windmills. Windmills produce electricity and pump water.
Water Find It What are tornadoes and hurricanes?
A Wonderful Liquid Out
Water is everywhere. All living things on Earth need water to live and
grow. We can survive a few days without food but not without water. It is
important for both plants and animals. Water does not have colour, odour
and taste.
Did You
Know? Water in various forms, makes up more than half of our body weight.
Sources of Water
Three-fourths of the Earth’s surface is covered with water. The oceans
and the seas contain most of the water. But this water is salty. It cannot
be used for drinking.
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