Explain the process of air exerting pressure
with the help of an activity.
Answers
The envelope of air surrounding the earth is called atmosphere. Air has weight. The weight of air presses our bodies all the time. This weight of air acting on a surface causes air pressure. Air pressure can be understood with the help of certain activities.
Activity IMaterials Required: tumbler, water, square cardboard pieceMethod: 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
Explanation:
Take a tin can with a lid. fill it with the water above half it m Heat can be able to boil the water . Blows out the heating device like a candle . put the lid tighly on the can . Put can carefully in a washbasin . pour fresh water over can. you see that the shape of the gets distorted. As poured over the can .