even if they are "dry" on the outside after a while they perspire. why is this?
2006-07-12 16:47:42 · 12 answers · asked by guitar_lady81 4 in Science & Mathematics ➔ Weather
yeah but how does condensation work and if the bottles are dry on the outside, why would they be wet? i dont get it.
2006-07-12 16:52:50 · update #1
oh okay man thanks so much, i get it now
2006-07-12 16:54:02 · update #2
It's called "condensation". The air that we breathe has a certain level of water vapor in it. We usually call this humidity, it's the same stuff clouds are made of, but not as concentrated. When a cold object sits out in the humid air, the vapors come into contact with the cold item and cool down as well. And, just like when clouds cool down, the vapors turn into beads of water and precipitate. In the air, this creates rain, on a cold can, it just looks like sweat.
2006-07-12 16:50:28 · answer #1 · answered by snodrift777 3 · 1⤊ 0⤋
They don't actually sweat. The moisture comes from the air.
There's a temperature called the due point, it's dependant on how humid the weather is. When the temperature drops below the dew point it rains.
In the case of your can, as it is cold if it is cold enough to be lower than the dew point then it will "rain" on your can, i.e. the moisture in the air will condense on your can.
2006-07-12 16:55:11 · answer #2 · answered by Paul C 4 · 0⤊ 0⤋
In the room temperature is higher than the temperature of the can.
The air contains water vapor in the air.
So the vapor condensed outside the cold can or bottle.
2006-07-12 16:53:46 · answer #3 · answered by redhead2734 3 · 0⤊ 0⤋
When the cold bottles are kept outside , it "sweats" due to the sorrounding water vapour. The water vapour in the atmosphere comes in contact with the outer surface of the cold bottles and condense. This forms water drops in the outer surface of the bottle.
2006-07-12 16:53:33 · answer #4 · answered by bindu k 2 · 0⤊ 0⤋
There is moisture in the air aka water vapor. The cold can cause the moisture that touches it to condense and collect on the surface.
2006-07-12 18:37:24 · answer #5 · answered by amish_renegade 4 · 0⤊ 0⤋
It's condensation, air condensing into liquid. I believe it is due to change in air pressure around the cold surface...
2006-07-12 16:52:49 · answer #6 · answered by Nick Name 3 · 0⤊ 0⤋
It is condensation. Warm air (Like Summer Air) can hold alot of humidity (water) and cooler air (like the air that is cooled around a cold soda can) cannot. Thus the humidity liquifies around the cooler air.
2006-07-12 16:53:32 · answer #7 · answered by crazymomma 4 · 0⤊ 0⤋
There is water vapor in the air. The hotter it is, the easier it is for it to exist as a gas. But the water vapor that touches the cold can becomes cold. It can't exist as a gas anymore; it becomes a liquid.
Because it's cold.
2006-07-12 16:53:26 · answer #8 · answered by Jim H 3 · 0⤊ 0⤋
there are 3 states of matter gas, liquid and, solid, if u ake liquid and cool it off enough it will bcome solid so the same thing happens when u cool off a gas enough it will bcome a liquid air is a gas so when u hav a bottle that is cold and u put it in a place that is hot it will bcome a liquid and b all over the bottle
2006-07-13 05:53:40 · answer #9 · answered by Anonymous · 0⤊ 0⤋
condensation! when the cold air meets with the hot air it causes condensation
2006-07-12 16:51:12 · answer #10 · answered by Kiki p 2 · 0⤊ 0⤋