There is about 2 ton of air on every square foot of the Earth (less at high altitudes)
Yes. (see - barometer)
nimple
Depends on how you do that - but most are fatal.
Yes. Atmospheric pressure is the pressure caused by air when it exerts pressure on the surface of earth.
Fluids have a higher density than air and therefore exert more pressure than air.
Water is more dense than air is.
A column of air exerts atmospheric pressure on the air or surface below it. This pressure is caused by the weight of the air above pushing down on the lower air or surface.
There is no pressure in outer space because it is essentially a vacuum, meaning there are very few, if any, particles present to exert pressure. Without air or any other medium to press against our bodies, we do not experience pressure in the same way we do in environments with air or water.
You have a misconception... Pressure can be definitely exerted on gas. You might have heard of air compressor? Pneumatic cylinder? these elements exert pressure on air(Gas). Free air from atmosphere is sucked inside then pressurized & used for many applications. Please go through working principles of these elements.
The atmosphere exerts pressure because of the weight of the air above pushing down on the air below. This pressure is caused by the force of gravity acting on the mass of the air molecules in the atmosphere.
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Yes.