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How does heat leave the earth?

  1. Jun 21, 2008 #1
    How does it leave the earth if it can only be transferred through matter and there's space outside our atmosphere?
  2. jcsd
  3. Jun 21, 2008 #2


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    There are three processes which transfer thermal energy, namely convection, conduction and radiation, the latter of which does not require a medium.
  4. Jun 21, 2008 #3


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    The atmosphere, the ground, everything emits radiation.
  5. Jun 22, 2008 #4
    Hi 39ster,
    Basically, heat transfer takes place in 3 ways:
    >Conduction (Particles of the medium do not move, but matter is required for transfer of heat
    >Convection (Particles of the medium themselver transport the heat)
    >Radiation (Heat transfer takes place through electromagnetic waves which do not really require a medium to propagate)
    Heat is lost by the earth through Radiation.
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