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by Anonymous on October 28th, 2007

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Why does water cool down and heat up slowly?

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  • by Joe-Speedy on November 3rd, 2007

    Joe-Speedy

    The phenomenon that you ask about is related to the specific heat capacity of the material. When a material can hold a lot of heat energy, the material will warm up slowly and loose temperature at the same rate. Things with a lower capacity to store heat, will warm up and cool faster.

    A good analogy would be the difference between a one quart pan and a 5 gallon pail. If you try to fill each one with a steady stream of water, you will fill the smaller pan first. Drill a hole in each after they are full and they will both drain at the same rate, but the smaller one will empty first. In this analogy, the water is like a quantity of heat energy (Q) and the container volume is the specific heat (C) of the material being heated.

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