How does atmospheric pressure change with altitude?

Answer 1

Atmospheric pressure decreases as altitude increases.

You can think of atmospheric pressure in the same way you would think of ocean pressure: the deeper you dive, the greater the pressure because more water is pushing down on you.

At sea level, you have the weight of all the air above pushing down on you. Thus as you increase your altitude, the air gets thinner and there is less air pushing down on you (resulting in lower atmospheric pressure).

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Answer 2

Ellie Andrews

Atmospheric pressure decreases with increasing altitude. This relationship is described by the barometric formula, which states that pressure decreases exponentially as altitude increases.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.