0
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.
Wiki User
∙ 14y ago
Wiki User
∙ 8y agoAir pressure is the weight of all the air above where you are measuring at.
And at the surface ALL of the air is above you.
(Actually, if you go down a deep hole then the pressure does go up.)
Add your answer:
Earn +20 pts
What happens when the atmospheric pressure is greatest near the Earths surface?
Air pressure is always greater nearer the earth surface than at altitude due to the mass of air above.
What happens to air pressure as the distance from Earths surface increases?
the air pressure increases
Do currents of cold sinking air produce regions of higher pressure or lower pressure at the earths surface?
Sinking air would add air to the surface, raising the pressure.
Earths surface winds blow from regions of higher what?
Air pressure toward regions of lower air pressure
What happens to air pressure as you move away from earths surface?
it decrease and it is globel warming
What happens when the atmospheric pressure is greatest near the Earths surface?
Air pressure is always greater nearer the earth surface than at altitude due to the mass of air above.
Where is the highest air pressure?
air pressure is the highest near the earths surface
What happens to air pressure as the distance from Earths surface increases?
the air pressure increases
Dose air in the atmosphere exert pressure on earths surface?
Yes. Atmospheric pressure is the pressure caused by air when it exerts pressure on the surface of earth.
The weight of the air on the earths surface is?
The weight of the air on the earth is called... Air Pressure
Do currents of cold sinking air produce regions of higher pressure or lower pressure at the earths surface?
Sinking air would add air to the surface, raising the pressure.
Earths surface winds blow from regions of higher what?
Air pressure toward regions of lower air pressure
Is air pressure weak or strong at earths surface?
weak and strong,it depends
Which weather condition most directly determines wind speeds at Earths surface?
Air pressure Gradient
What happens to air pressure as you move higher above earths surface?
The air is thinner the higher you go.
Why does air pressure drop as you move away from the earths surface?
In simple terms... gravity ! Gravity is holding the air close to the surface of the Earth. The further away you are from the surface - the lower the gravity - and thus the lower the air pressure.
Why is air pressure greatest at the Earth's surface (the Troposphere answer?
The air above it weighs it down.
