When the weather is warm, why do cups containing liquid eventually get wet on the outside?
2007-03-19 03:10:12 · 4 answers · asked by JudasHero 5 in Science & Mathematics ➔ Other - Science
The water cools the cup and cools the air near it. Cool air doesn't hold as much water as warm air. As the saturated warm air gets near the cold cup, some of the water that is in the air can no longer stay in vapor state and condenses on the cup.
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2007-03-19 03:16:03 · answer #1 · answered by DanE 7 · 1⤊ 0⤋
It is called the "dew point" which is the temperature below which "dew" forms on cold objects, like a can or bottle of soda. What happens is that the air next to the can (say) cools and as it does so it releases some of the moisture which it contains. That moisture collects on the side of the can.
HTH
Charles
2007-03-19 03:17:27 · answer #2 · answered by Charles 6 · 1⤊ 0⤋
I think you're referring to a cup of cold liquid.
Due to the coldness of the cup, heat energy is removed from the moisture (water vapour), in the air causing it to condense on the outside of the cup and forms water droplets.
2007-03-19 03:51:13 · answer #3 · answered by Norrie 7 · 1⤊ 0⤋
its because the liquid is colder than the air temperature, which causes the moisture in the air to cool and condense back into water.
2007-03-19 07:20:34 · answer #4 · answered by Anonymous · 0⤊ 0⤋