2006-08-10 13:16:01 · 7 answers · asked by Anonymous in Environment
Gases can dissolve in gases.
The moisture in air is actually water dissolved in the air. At lower temperatures, water is less soluble so the air carries less than it can when it is warm.
Otherwise, we'd never be able to say "hot and sticky" or "it's not the heat; it's the humidity!"
2006-08-10 13:22:21 · answer #1 · answered by Thinker 5 · 0⤊ 0⤋
Because the vapor pressure of water declines with falling temperature. The vapor pressure at 25 C is about 32 millibars, but at 0 C it is only 6 millibars. Hence, 100% humidity means more than five times as much water in the air at 25 C than at 0 C.
2006-08-10 20:47:50 · answer #2 · answered by Anonymous · 0⤊ 0⤋
The cold causes molecules in air to move more slowly. The air is no longer able to hold water drops up in it, and they precipitate out as rain, fog, slow, ice, etc.
It's like a salad dressing. As long as you stir or shake it, the ingredients are suspended (high energy, aka heat). Once you stop, the oil and vinegar start to separate as the lack of motion can't support the weight of the oil molecules anymore.
2006-08-10 20:25:28 · answer #3 · answered by Karl the Webmaster 3 · 0⤊ 0⤋
Relatively lower freezing point of water causing it to turn into ice leaving the air low in misture.
2006-08-10 22:35:10 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Cold air holds less humidity than warm air.
2006-08-10 20:20:22 · answer #5 · answered by Anonymous · 0⤊ 0⤋
The cold air freezes the water and it snows, all that humiditiy is on the ground now, that's why snow is so wet!
2006-08-11 01:15:59 · answer #6 · answered by suppy_sup 3 · 0⤊ 0⤋
because there is no much heat so there is no much water vapor in the air....
2006-08-10 20:22:58 · answer #7 · answered by Anonymous · 0⤊ 0⤋