Write an activity to show that air exerts pressure
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weight of air acting on a surface causes air pressure. Air pressure can be understood with the help of certain activities.
Activity I
Materials Required: tumbler, water, square cardboard piece
Method: Fill up the tumbler with water up to the brim. Cover it with cardboard piece and turn the glass upside down. Slowly remove your hand.
Observation: Cardboard does not fall and water stays in the glass.
Inference: air pushes the cardboard up and prevents it from falling.
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air pressure can be understood with the help of several activities
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