2006-09-02 08:22:51 · 13 answers · asked by Ejsenstejn 2 in Science & Mathematics ➔ Earth Sciences & Geology
Hot air. Simplified explanation:
As air warms up, the molecules expand and have more space between them. Whatever warms the air also warms up the water molecules. Heated water changes to a gaseous form and rises to fill the spaces between the air molecules. This is why a nice weather front is called a warm front. It is also why humidity is higher in warmer months, there is more water vapor in the air.
As the air cools, the water also cools and condenses; first into clouds, then into some form of precipitation, depending on how cold the air gets. That is why cold fronts usually bring wet weather.
2006-09-02 08:38:57 · answer #1 · answered by seeme1995 3 · 3⤊ 1⤋
Hot air holds more water. That's why in the summer people complain of it being hot and humid. Also, in the winter, a lot of people have problems with dry skin because cold air has a lot less humidity. Thunderstorms (or rain in general) are caused by warm air hitting up against cooler air. As the warm air rises and cools it is unable to hold as much water... thus water droplets form and fall.
2006-09-02 08:39:57 · answer #2 · answered by kctd05 1 · 1⤊ 0⤋
There can be more water vapor vapor in the air when it is hot than when it is cold. As evidence of this, note that cold causes dew or frost to condense out of the air.
It's not strictly accurate to say the *air* holds water. The concentration of water vapor ("partial pressure", in technical terms) is the same for a given temperature whether there's an atmosphere or not.
2006-09-02 13:48:46 · answer #3 · answered by injanier 7 · 1⤊ 0⤋
Hot air....hence humidity.
In response to other posts:
Ice, sleet, hail, etc. is actually less dense that water.
Ice has a density of 0.917 g/cm³ at 0 °C, whereas water has a density of 0.9998 g/cm³ at the same temperature. Liquid water is most dense, essentially 1.00 g/cm³, at 4 °C and becomes less dense as the water molecules begin to form the hexagonal crystals of ice as the temperature drops to 0 °C.
Remember how cool air tends to represent dryness. Often lips will chap and skin will dry out during cooler weather. This is because there is little presence of water in air.
2006-09-02 08:26:08 · answer #4 · answered by __ 3 · 2⤊ 0⤋
Hot air. (Which is why you're more likely to see fog on a cold day. And by "hold" I assume you mean hold as water vapor.)
2006-09-02 08:25:07 · answer #5 · answered by Pepper 4 · 2⤊ 0⤋
hot air
2006-09-02 08:25:39 · answer #6 · answered by ♥mama♥ 6 · 2⤊ 0⤋
Does it try this whilst moving? Our Mercury Villager will do a similar element if we are at a standstill yet while moving it cools down. We drove it by a flora and fauna ranch one time and moving at 5mph killed the rear passengers, in spite of the undeniable fact that it particularly became into best and cool up front. yet as quickly as we left and obtained moving, it cooled surprising bypass into opposite.
2016-12-11 19:43:45 · answer #7 · answered by ? 4 · 0⤊ 0⤋
Hot air of coarse.
2006-09-02 13:36:36 · answer #8 · answered by Scott S 4 · 0⤊ 0⤋
Hot. That's why warm fronts usually bring rain or fog.
2006-09-02 08:26:39 · answer #9 · answered by badkitty1969 7 · 2⤊ 1⤋
Cold Air. In forms of water, sleet, hail, snow, ice, etc.
2006-09-02 08:26:13 · answer #10 · answered by Ron B. 7 · 0⤊ 4⤋