i know that when the water evaporates from your skin which draws heat away from ur body, making u feel cold
but y does it draws heat away from ur body?
2007-12-03 05:44:39 · 10 answers · asked by froggy 2 in Science & Mathematics ➔ Physics
Water evaporating off of your skin has a cooling effect (that is why we sweat).
2007-12-03 05:47:04 · answer #1 · answered by olemissgirl21 2 · 5⤊ 1⤋
You pretty much answered your own question. The process is called evaporative cooling. When a surface is wet, the water on the surface absorbs some heat. As the water evaporates into water vapor, it takes the heat with it.
As was said before, this is why we sweat when we are hot. Getting out of a pool is kind of like sweatingx1000.
2007-12-03 13:51:01 · answer #2 · answered by dtwbagsmasher 2 · 4⤊ 0⤋
In order to evaporate, water needs heat energy. As the water is on your body, it takes some of the heat from your body and some from the surroundings. (Atmosphere, sun etc).
Each gram of water, in taking this heat, removes some of the heat from your body, makes you feel cooler.
If there's a strong breeze, the rate of evaporation is increased and, you feel even colder.
(Some of the Latent Heat of Evaporation = Change of State, is taken from your body as Sensible Heat of Cooling = Decrease in Temperature ...The process is, in fact, a basic form of Refrigeration used by the Nomadic tribes of the Desert to cool their tents by throwing water over them, the evaporation removes sensible heat from the tent's interior).
(Mr 'Thumbs Downer', before you're tempted, don't say this is wrong, I've worked in the Desert AND with Refrigeration, for a very long time).
2007-12-04 19:59:18 · answer #3 · answered by Norrie 7 · 0⤊ 0⤋
One of water's properties is its HEAT CAPACITY. It absorbs heat very well. When you get out of a pool, the droplets on your body absorb heat from the inside of your body. These water droplets evaporate outside of the pool, thereby carrying heat with it. This is the same way perspiration works.
2007-12-03 14:14:51 · answer #4 · answered by zSam 2 · 1⤊ 0⤋
Every gram of water that evaporates from your body takes with it 540 small calories of heat energy.
Normally one calorie of heat energy will heat one gram of water through one Celsius degree.
The heat of vapourization of water is substantially more (540 calories per gram).
2007-12-03 14:29:12 · answer #5 · answered by J C 5 · 1⤊ 1⤋
because water need heat energy to break the bonds between particles so they can turn to steam/gas..
so they absord the heat from the body
2007-12-03 14:01:34 · answer #6 · answered by Anonymous · 0⤊ 0⤋
Only the most energetic of the water particles evaporate. Since it is the most energetic particles that are the ones leaving your body, they reduce its temperature.
2007-12-03 14:00:24 · answer #7 · answered by ZikZak 6 · 1⤊ 1⤋
HEAT CONDUCTS TO THE FLUID AND PASSING AIR COOLS. THIS WILL CONTINUE TO HAPPEN UNTIL THE FLUID HAS EVAPORATED WHICH IS THE POINT WHEN YOU START TO WARM.
2007-12-03 13:53:09 · answer #8 · answered by Anonymous · 1⤊ 1⤋
It's picking up latent heat as it evaporates.
2007-12-03 13:48:41 · answer #9 · answered by Anonymous · 5⤊ 2⤋
because of the laws of thermodynamics, heat moves from hot to cold to try to disburse evenly
2007-12-03 13:48:15 · answer #10 · answered by Ace A 3 · 0⤊ 4⤋