what ia meant by Atmospheric pressure what is the cause of atmospheric pressure
Answers
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. Atmospheric pressure is commonly measured with a barometer Meteorologists describe the atmospheric pressure by how high the mercury rises.
Air pressure is caused by the weight of the air molecules above. Even tiny air molecules have some weight, and the huge numbers of air molecules that make up the layers of our atmosphere collectively have a great deal of weight, which presses down on whatever is below.
Atmospheric pressure is caused by the gravitational attraction of the planet on the atmospheric gases above the surface and is a function of the mass of the planet, the radius of the surface, and the amount and composition of the gases and their vertical distribution in the atmosphere.
Explanation:
the envelope of air is known as atmosphere the atmospheric air extends up to many kilometres above the surface of earth the pressure exerted by this is known as atmospheric pressure