(a) What is meant by atmospheric pressure? What is the cause of atmospheric pressure?
(b) Why are our bodies not crushed by the large pressure exerted by the atmosphere?
(c) Explain why, atmospheric pressure decreases as we go higher up above the earth’s surface.

(a). Atmospheric pressure: 

Our surrounding air exerts pressure which is known as atmospheric pressure. Atmospheric pressure depends on the height of altitude and density of the air.

(b). Our bodies don't get crushed by the large pressure exerted by the atmosphere as the same pressure is exerted by our blood from inside which balances the atmospheric pressure.

(c). At higher altitudes the gravity to pull down the air molecules is very less so the atmospheric pressure decreases as we go higher up above the earth’s surface.

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Updated on: 10-Oct-2022

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