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Question

Which of the following layers of the atmosphere will have the lowest pressure?


A

Thermosphere

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B

Stratosphere

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C

Exosphere

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D

Mesosphere

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Solution

The correct option is C

Exosphere


The Exosphere has the lowest pressure because pressure drops as altitude increases. This is due to the

atmospheric air being pulled towards the surface of the earth due to gravity. Which means air density is less as you go

up because there is lesser and lesser air mass above you. Air density & air pressure are directly related because as density goes

down pressure goes down too and vice versa.


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