Question

Explain atmospheric pressure. On what factors does it depend and how?

Answer 1

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• ❥An atmosphere is the unit for atmospheric pressure, and sea level is set at 1 atmosphere (atm). The atmospheric pressure at any given point depends on two factors: altitude (the height of a thing in relation to sea level) and temperature (the intensity of heat).

Answer 2

Answer:

It can be odd to think of air as having weight - after all it doesn't feel like it! But the air is full of molecules and though extremely light, they do have weight. The more air you have above a thing, the more weight that thing will feel.

Atmospheric pressure is the weight of the atmosphere on a surface. The units for atmospheric pressure are conveniently known as atmospheres (atm) and the average pressure at sea level is set at 1 atmosphere (atm).

On average, the weight of the atmosphere on a square inch is 14.7 pounds at sea level. This means if you were to extended a 1-inch column from sea level to the edge of our atmosphere, all the gases inside would weigh 14.7 pounds. Another way to think about it is, if you put your hand out, there is more or less 175 pounds of atmosphere weighing down on it, and a standard 8.5 x 11 piece of paper has over 1300 pounds weighing down on it.