Air weighs practically nothing, even when subjected to gravity.
Air pressure is caused by the weight of all the air stacked up above you. The higher you go, the less air there is above you, so the pressure is lower.
Atmospheric pressure.. maybe
No change. Crushing just pushes out air.
The atmosphere (the air above you) naturally applies air pressure as a result of Earth's gravity. In other words, because it is made of matter it has weight.
because the table exerts the same amount of force
The weight of air above us in the atmosphere
the weight of a column of air above you that puts pressure on you
air pressure
The changes are caused by the weight of air above it.
Standard air pressure - is approximately 14 pounds per square inch... This is counteracted by the pressure of the fluids inside our own bodies.
Downforce
Air pressure is caused by the weight of the atmosphere above an object. When one goes higher, there is less air above and so the pressure drops.
No, air pressure decreases with increasing elevation. This is because air pressure is due to the weight of the column of air above where you are. The higher you go, the less air there is above you, so the less the weight of that column of air and the lower the air pressure.
Atmospheric pressure.
gravity
Downforce
Because as you get closer to the surface of the earth, the more air that is on top of you. At the top of the atmosphere, there is no air, and everything is a vacuum, where you have no weight. When you get close to the earth, the weight of the air builds until it when you're at the very lowest point of the earths surface, all the air in the atmosphere above you is pressing down.