Question

What is meant by atmospheric pressure? What are the cause of atmospheric pressure?

Answer 1

1. Atmospheric pressure is the force exerted at a given point in the atmosphere by the air above it.
2. The magnitude of atmospheric pressure is equal to the pressure exerted by a 760 mm tall column of mercury
3. Atmospheric pressure is caused by the weight of air above the earth's surface.
4. Atmospheric pressure varies with the altitude of the earth's surface.
5. Atmospheric pressure decreases with an increase in height.