Tea cools down.
 Fred |
 Lilly |
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Marvin also emits some of his heat to the environment.
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Sure, because his body is hotter than the walls of the igloo or the air inside of it. He is able to produce this heat because he consumed food - which is energy.
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So Marvin heats up the air inside of the igloo. Is there a place in the igloo where the warm air gets caught?
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If the warm air would accumulate in one place inside of the igloo we would be very close to solving the problem.
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