Question

Define atmospheric pressure. How does it vary with altitude.
perfect answer= brainly

Answer 1

Explanation:

The air around you has weight, and it presses against everything it touches. That pressure is called atmospheric pressure, or air pressure. It is the force exerted on a surface by the air above it as gravity pulls it to Earth.

As elevation increases, there is less overlying atmospheric mass, so that atmospheric pressure decreases with increasing elevation.