2006-08-08 01:36:50 · 19 answers · asked by saocb2001 2 in Science & Mathematics ➔ Earth Sciences & Geology
No. It depends on elevation, because if you go higher, pressure is lower and water boils at 90 or less.
100 degrees refers to sea level.
2006-08-15 17:34:24 · answer #1 · answered by Anonymous · 0⤊ 0⤋
No.
Water boils at 100 d C under a certain air pressure. At lower pressures it will boil at lower temperatures and at higher pressure it can still be water at even 103 d C or more.
Under normal atmospheric conditions, water vapor is continuously evaporating and condensing. Normally, water vapor is invisible to the naked eye. WATER VAPOR IS NOT STEAM. Don't confuse the two. You can have water vapor at room temperature.
The amount of WV in air is also known as humidity.
2006-08-08 08:39:41 · answer #2 · answered by blind_chameleon 5 · 1⤊ 0⤋
Nope. Water changes from the liquid to vapor form at 100C pretty quickly, but it can evaporate at any temperature above freezing. Think of that boundary between the water and the air as a transition zone with lots of water vapor down close to the surface.
Also, remember that water can change from solid to vapor by the process of sublimation.
2006-08-13 02:07:02 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Please do not confuse the water vapor to steam. Boiling point of water slightly differs according to the atmospheric pressure. Water vapors are generated even in room temperature. The boiling point of water is near 100 degree Celsius. But it needs lat en heat to change the water into steam. Latern heat is the heat required to change the state of the mass without raising its temperature. By A.Ganapathy
2006-08-09 12:10:10 · answer #4 · answered by A.Ganapathy India 7 · 0⤊ 0⤋
water vapor also known as aqueous vapor is the gas phase of water. Water vapor can be produced from the evaporation of liquid water or from the sublimation of ice. Under normal atmospheric conditions, water vapor is continuously evaporating and condensing.. even at room temperature, water can be turned into vapor.. so long the surface temperature is higher than the water itself and the humidity level allows it to evaporate.. so, there isn't a need for the water to be at 100degrees Celsius to change its form to vapor.. only pure steam[unmixed water] temperature is at 100degrees..
2006-08-08 08:48:47 · answer #5 · answered by wl5201 1 · 0⤊ 0⤋
No, boiling temperature of water is 100C at sea level. The higher altitude you get (lower air pressure), the lower the temperature required for water to boil.
Not to mention you can watch water evaporate off a table without heating it.
2006-08-08 08:41:07 · answer #6 · answered by 006 6 · 0⤊ 0⤋
No..
At 100 degrees celsius you get steam..
You can get water vapor as low as 0 degrees celsius and below
that you can get water vapor off of evaporating ice...
The colder and more humid it is, the less vapor you get ....
Evaporation from seawater at temps. in the high 30's C. supply
the moisture for hurricanes...
2006-08-08 13:24:10 · answer #7 · answered by Anonymous · 0⤊ 0⤋
no it can be at any temp to cange to vapor but has to be at 100c 375 k or 212 f to boil at sealevel.
ontop of mt everest the water only has to reach 70 f to boil. ithink
that is why pressure cookers cook quickly..
i mean think about an icecube sublimating changeing directly from a solid to a gas
2006-08-15 21:31:00 · answer #8 · answered by Luigi 3 · 0⤊ 0⤋
No it doesn't.
Proof - Clouds are water vapour or droplets at a lower temperature.
Fog can be observed over extremely cold water.
Condensation is water vapour.
100 degrees is the boiling point of water to change water to vapour with latent heat. That is another form of water vapour.
2006-08-08 09:57:15 · answer #9 · answered by beedaduck 3 · 0⤊ 0⤋
At low pressure below that of atmospheric pressure, water can boil at a lower temperature to become water vapour.
Also, water can evaporate at low temperatures to become water vapour.
2006-08-08 08:41:51 · answer #10 · answered by Simple 7 · 0⤊ 0⤋