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Why does less dense air rise and more dense air come down?
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[QUOTE="Drakkith, post: 6831475, member: 272035"] The pressure difference is not primarily caused by temperature. Note that there are parts of the atmosphere where temperature rises with altitude instead of falling, and yet buoyancy works just fine there. There are also temperature inversions in the oceans, and yet submarines work just fine there too. Also, water isn't very compressible, so its change in density vs temperature is extremely small. [/QUOTE]
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Why does less dense air rise and more dense air come down?
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