2006-07-15 20:06:51 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Physics
Air pressure varies with altitude and with the weather. The gasses in the atmosphere have mass and are attracted to the earth due to gravity. The pressure will vary with the altitude in a similar way as the water pressure changes as you go deeper under water.
The pressure will also change depending on the temperature (which will change the density) and the humidity (which changes the composition). Changes in temperature and humidity can be compared to changes in salinity levels in the ocean. If the salinity level is higher, the pressure at a given depth will be greater. Colder temperature and less humidity cause higher air pressure.
Weather changes can also change the air pressure. An extreme example is during a hurricane. Storm surge is primarily caused by the low pressure if the storm.
2006-07-16 02:35:05 · answer #1 · answered by Somewhere in Iraq 2 · 0⤊ 0⤋
I'll be honest I really have no clue about this, nor if I'm answering correctly or not. However I did learn a few thigns in geoglogy that can help.
I don't think the pressure is the same. Materials tend to get denser as you get towards the core of the earth sense the objects with most mass will get have a harder gravitationl pull and will be dragged in more, however space has no mass at all. Which is exactly what it is. Nothing. Air however still has a mass so it's not consider "space".
With that being said I think that the surface has more because that air is trying to compress into the earth to get to the center causign pressure on the surface itself. However nothing is touching the atmosphere other then space and dust particles so I don't think it is having to much pressure pushing on it. And even though it isn't much farther in space terms it is still farther so it will have less of a gravitational pull from the earth, so that's even less pressure on it.....
Hope that helped a little...if not oh well I tried.
2006-07-15 20:19:20 · answer #2 · answered by Mellow lazy guy 3 · 0⤊ 0⤋
the pressure of what ?
the pressure of the atmosphere on the earth's surface is the same as the pressure of the earth's surface on the atmosphere
there is no pressure on the atmosphere from above as it is a vacuum
2006-07-15 20:11:43 · answer #3 · answered by Ivanhoe Fats 6 · 0⤊ 0⤋
Pressure is greatest at sea level and then decreases with altitude.
An "atmosphere" can actually be referred to as a measure of pressure. The higher you go, the less air you have weighing down on you from above.
It's kind of the same concept as when you go under water. The deeper you go, the more pressure you have from the water weighing down on you from above.
2006-07-15 20:13:12 · answer #4 · answered by User 3 · 0⤊ 0⤋
The atmosphere exerts a pressure of about 15 pounds per square inch on everything at sea level.The pressure goes down the higher you are above sea level.
2006-07-15 20:10:52 · answer #5 · answered by J_DOG 3 · 0⤊ 0⤋
Mellow lazy guy has given you the correct answer.
2006-07-15 21:14:40 · answer #6 · answered by Pearlsawme 7 · 0⤊ 0⤋
not sure
2006-07-15 20:19:31 · answer #7 · answered by Anonymous · 0⤊ 0⤋