Air pressure at high altitude

2007-11-17 12:30 am
Air pressure at high altitude ?

我想問:
As we know that warm air rises and cool air drops, warm air should have more air pressure ( 因為其中一個 increase air pressure 的方法是 heat up gas ). 那麼為什麼 the air pressure is low at high altitude
( e.g. mountain)?

希望你們可以解釋清楚給我知道 !

Thank you !!!!!!

回答 (2)

2007-11-17 1:41 am
✔ 最佳答案
Because warm air has lower DENSITY then cold air, so warm air rise.
Because air is pull down by gravity, so at lower attitude, more air on top to press downward than at high attitude,
as a result, the air pressure at higher attitude is less than lower attitude.
參考: My knowledge
2007-11-21 11:18 pm
warm air rises and cool air drops


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