Why the atmospheric pressure changes with the changes of altitude?
Why we do not feel the atmospheric pressure?
The atmosphere for its weight applies force on the earth's surface and the amount of force acting perpendicularly on per unit surface area of the earth is called atmospheric pressure.
As the altitude increase, the length of the air column decreases. So, the weight it applies to per unit surface area i.e, pressure decreases with the increase of altitude from the surface.
