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Compare the surface area-to-volume ratios of the Moon and Venus. Based on your answer, what should...

Compare the surface area-to-volume ratios of the Moon and Venus. Based on your answer, what should you expect about the cooling time of Venus compare to that of the Moon?

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Answer #1

A planet is cooled by emitting radiative energy and this rate at which the planet cools depends upon the surface to volume ratio. For a spherical planet with radius r,

=> Surface to volume ratio,

which means that a larger planet will cool more slowly as compaired to smaller one.

For Moon vs Venus,

It means that moon will cool down approx 3.5 times fast than venus, if we consider only the size factor.

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