This experiment is about air pressure. Use basic home materials to understand air pressure. All you need for this experiment is: Tissue paper, a bowl of water & a glass of water. The air around you has weight, and it presses against everything it touches. That pressure is called atmospheric pressure, or air pressure. It is the force exerted on a surface by the air above it as gravity pulls it to Earth. Atmospheric pressure is commonly measured with a barometer.
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