Air pressure decreases or increases as we go up at altitude?

Answer 1

It decreases. The pressure and density of the atmosphere both decrease with altitude.

Answer 2

Decreases

Answer 3

Decreases

Answer 4

Well air pressure at a point is caused due to the huge mass of air over it. So when we take a point as we go higher, there is lesser air above it....thus air pressure decreases with increase in elevation.

Answer 5

Decreases.

Answer 6

DEcrease

Answer 7

Air pressure decreases when we go higher altitudes. The number of air molecules decrease as we go higher due to the reducing effect of gravity. Logically, as the air molecules decrease the pressure exerted by them would also decrease.

Answer 8

As we go higher and higher, the atmospheric pressure decreases as concentration of air decreases considerably with increase in height.

Answer 9

It decreases rapidly from sea level which is at 1013.25 to 500mb which is about half way up the trophospere. From 500mb forward the pressure decreases but at a slower rate.

Remember, when one speaks of air pressure, it actually means the weight of the air above that certain point.

Answer 10

Atmospheric pressure is the pressure at any point in the Earth's atmosphere.

In most circumstances atmospheric pressure is closely approximated by the hydrostatic pressure caused by the weight of air above the measurement point. Low pressure areas have less atmospheric mass above their location, whereas high pressure areas have more atmospheric mass above their location. Similarly, as elevation increases there is less overlying atmospheric mass, so that pressure decreases with increasing elevation. A column of air 1 square inch in cross section, measured from sea level to the top of the atmosphere, would weigh approximately 14.7 lbf. A 1 m² column of air would weigh about 100 kilonewtons (equivalent to a mass of 10.2 tonnes at the surface).