Category : 1st Class
Air and Water
Air
Air living things need air to breathe. Air is a mixture of gases. We nither see it nor can touch it. But we can feel it's presence. Fish breathe through its gills. Air fills space and has weight.
Air makes the life possible on earth. Not only have human beings, even plants and animals also need air to survive.
Wind
Moving air is called wind. It can moves things.
Windmill Sailboat
Air helps in burning
A Candle is lit with a matchstick
The burning candle is covered with a glass jar air inside the glass jar
The candle is put out as there is no
Water
All living things need water to live. Water comes from rain. Rain water fills rivers, lakes and ponds.
Water is needed for many things
Water to drink Water for plant
Water for animal Washing
Cooking Putting out fire
Bathing
Seas and oceans are the big water bodies. But we cannot use this water for drink because water of seas and oceans are very salty.
Storage of Water
Water can be stored in many ways.
Dam Well
Bucket Tank
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