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mountains?
ok so if heat rises and your closer to the sun why the heck is it colder on top of a mountain?
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In the northern hemisphere(where the US is), the earth is closest to the sun during winter. So the distance has nothing to do with the temperature(it's actually the tilt of the earth that causes the seasons). Like the other columnists say, it's the air pressure that makes it cold at the top of a mountain.
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The air is thinner, basically. As you get farther away from sea level, the atmosphere isn't as "dense" so to speak, and it gets cold.
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It is the lower pressure at higher altitudes that causes the temperature to be colder on top of a mountain. The air gets thinner the higher up you go ie. less air particles, these are what are warmed up by the sun to give a higher air temperature. If there are less particles to be warmed up then there will be less heat.
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