The Naked Scientists

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Author Topic: Hot air rises  (Read 2186 times)

paul.fr

  • Guest
Hot air rises
« on: 23/04/2007 01:23:16 »
Hot air rises, so what happens to cold air?


 

another_someone

  • Guest
Hot air rises
« Reply #1 on: 23/04/2007 01:31:31 »
The only reason hot air rises is because cold air falls, and displaces the hot air upwards.  If there was no cold air, then the hot air would not rise (OK, if there was no cold air, one could ask in relation to what was the hot air hot - so maybe that is a silly point to make).
 

lyner

  • Guest
Hot air rises
« Reply #2 on: 23/04/2007 23:45:02 »
If you stood with bare feet by an open freezer door then you would definitely say that cold air falls.
 

lyner

  • Guest
Hot air rises
« Reply #3 on: 23/04/2007 23:46:38 »
Convection is nature's own heat engine; a hot source, a cold sink , resulting in mechanical work.
 

The Naked Scientists Forum

Hot air rises
« Reply #3 on: 23/04/2007 23:46:38 »

 

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