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Atmospheric pressure is caused by the force of the air above the earths surface. It is measured by the point in which the air meets the atmosphere.
A low pressure area is caused by a drop in temperature in the atmosphere.
The pressure inside the bag is the same as the pressure outside.
Mars has a low atmospheric pressure reading because there is a lighter atmosphere, which means less air, which means less weight or pressure.
force = pressure x area , so pressure is force divided by area, air molecules stack up on top of each other and the force of them (caused by gravity and their mass ) weighs down with a pressure of 14.7 lbs/sq inch or 1 bar. As you go higher the stack is lower so the pressure drops until you get to space and it measures a vacuum.
Barometric pressure
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.
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.
Weight of the atmosphere above a surface.
The air pressure on Earth is caused by the weight of the atmosphere pressing down. This pressure is also known as "atmospheric pressure". Normal atmospheric pressure at the surface of the Earth is 101 kPa, 760 mm Hg, or 14.7 psig
The weight.
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Weather
Atmospheric pressure is caused by the force of the air above the earths surface. It is measured by the point in which the air meets the atmosphere.
The atmosphere exerts pressure on various objects on the earth's surface. Air pressure is generally caused by the collision of the gas molecules with one another.
A low pressure area is caused by a drop in temperature in the atmosphere.
The cause is weight of the atmosphere.