INSIGHT UPSC QUIZ

GS Geography Physical Geography of World
Q.

What happens to atmospheric pressure with increase in altitude?

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Explanation:

ANS. (B) 
In most circumstances atmospheric pressure is closely approximated by the hydrostatic pressure caused by the mass of air mass above their location, whereas high-pressure areas have more atmospheric mass above their location. Likewise, as elevation increases, there is less overlying atmospheric mass, so that pressure decreases with increasing elevation.

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