Question

Why does the atmospheric pressure at the higher altitude differ from the atmospheric pressure at the sea level?

Answer 1

Answer:

At higher elevations there are fewer air molecules above a given surface than a similar surface at lower levels.......Since most of the atmosphere molecules are held close to the earth's surface by the force of gravity, air pressure decreases rapidly at the first, then more slowly at the higher levels

Answer 2

Answer:

Atmospheric pressure decreases as the height of a surface above ground level increases. This is because, as the altitude increases: the number of air molecules decreases. the weight of the air decreases.