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Asked by ElmargutJR to Anais, katy, Lauren, Richard, Stuart on 10 Mar 2016.
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Richard Friend answered on 10 Mar 2016:
In water. When the ice is in contact with water it can lose or gain heat a lot quicker than in air, because the number of times the molecules bang into the ice is a lot higher, because there’s a lot more of them in water than in air! Molecules banging into each other is how they transfer their energy, or heat. When there aren’t any molecules for this to happen with, the energy transfer is really slow, and things keep their heat (or cool) for longer. This is how vacuum flasks work – there’s a layer in the flask where there’s nothing in it to transfer the heat, so your coffee can stay hot for days!
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Lauren Laing answered on 10 Mar 2016:
Richard is right, if the Water and Air are the same temperature, an ice cube will melt faster in the water. The molecules in a liquid are more densely packed than the molecules in a gas, which means that the ice cube makes more contact with molecules in water than in air.
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Stuart Atkinson answered on 10 Mar 2016:
Lauren and Richard are right, if the air and water are at the same temperature it will melt quicker in water. However, if the air was very hot and the water was cold, then it may be that the ice cube melts quicker in air!
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Anais Kahve answered on 11 Mar 2016:
I agree with what has been said. That’s why it’s so important that the temperature of the seas doesn’t rise too much otherwise icebergs will melt, sea levels will rise and peoples’ homes would flood.
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