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NemiM [27]
3 years ago
5

How does air pressure change as altitude increases in the atmosphere?

Geography
2 answers:
marishachu [46]3 years ago
8 0
Pressure<span> with Height: </span>pressure<span> decreases with </span>increasing altitude<span>. The </span>pressure<span> at any level in the </span>atmosphere<span> may be interpreted as the total weight of the </span>air<span> above a unit area at any </span>elevation<span>. At higher elevations, there are fewer </span>air<span> molecules above a given surface than a similar surface at lower levels.</span>
LUCKY_DIMON [66]3 years ago
7 0
<span>The higher the altitude, the lower the atmospheric pressure. Lower pressure in turn causes water to evaporate more quickly, and water actually boils at a lower temperature. The percentage of oxygen in the air at two miles (3.2 km.) is the same as at sea level (21%). However, the air pressure is 30% lower at the higher altitude due to the fact that the atmosphere is less dense--that is, the air molecules are farther apart. The important effect of this decrease in pressure is this: in a given volume of air, there are fewer molecules present. This is really just another way of saying that the pressure is lower. This is called Boyle's law.</span>
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