This happens because of condensation.
Putting ice into the water lowers the temperature of the water, which will also lower the temperature of the cup. The surrounding air, however, is not that cold, and is at a lower temperature. Because the cup is cold, the air surrounding the cup lowers temperature too; the coldness of the cup is condensing the air, or packing the air molecules closer together. Air contains vapour too, so, when the sparse vapour molecules are condensed, a process called condensation happens. Vapour molecules change into liquid form and thus appear as water droplets on the cup.
By the way, why is this in the Jokes and Riddles section?
2006-08-06 07:25:48
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answer #1
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answered by Anonymous
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why is this n the jokes and riddles section???
but anyways here is your answer:
Condensation is the change in matter of a substance to a denser phase, such as a gas (or vapor) to a liquid. Condensation commonly occurs when a vapor is cooled to a liquid, but can also occur if a vapor is compressed (i.e., pressure on it increased) into a liquid, or undergoes a combination of cooling and compression. Liquid which has been condensed from a vapor is called condensate. A device or unit used to condense vapors into liquid is called a condenser. Condensers are typically coolers or heat exchangers which are used for various purposes, have various designs, and come in many sizes ranging from rather small (hand-held) to very large.
Condensation of vapor into liquid is the opposite of evaporation or boiling and is an exothermic process, meaning it releases heat. The water seen on the outside of a cold glass on a hot day is condensation.
Condensation of water in nature
Water vapour will only condense onto another surface when that surface is cooler than the temperature of the water vapor, or when the water vapor equilibrium in air, i. e. saturation humidity, has been exceeded. When water vapor condenses onto a surface, a net warming occurs on that surface. The water molecule brings a parcel of heat with it. In turn, the temperature of the atmosphere drops very slightly. In the atmosphere, condensation of water vapour is what produces clouds. The dew point of an air parcel is the temperature to which it must cool before condensation in the air begins to form.
Also, a net condensation of water vapor occurs on surfaces when the temperature of the surface is at or below the dew point temperature of the atmosphere. Deposition is a type of condensation. Frost and snow are examples of deposition (or sublimation). Deposition is the direct formation of ice from water vapor.
2006-08-06 14:29:13
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answer #2
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answered by Anonymous
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Is it because ice in water in a cup causes the cup to cry?
2006-08-06 14:41:21
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answer #3
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answered by papricka w 5
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Hot air can hold more moisture than cold air. The ice cools the glass, and the air immediately around it, and the moisture in the air outside the glass needs somewhere to go, so it clings to the glass.
2006-08-06 15:05:14
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answer #4
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answered by 42ITUS™ 7
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The ice makes the glass colder than the air, therfore causing condensation.
2006-08-06 14:27:38
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answer #5
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answered by Antisocial 4
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Condensation from the temprature change
2006-08-06 14:28:26
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answer #6
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answered by Myke BoDean 6
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like what grade are you in? You learn this stuff in elementary school
2006-08-06 15:08:45
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answer #7
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answered by Anonymous
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