How does heat leave the earth?

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Heat leaves the Earth primarily through radiation, which allows thermal energy to transfer via electromagnetic waves without needing a medium. While conduction and convection require matter for heat transfer, radiation enables heat to escape into the vacuum of space. The atmosphere and the Earth's surface both emit this radiation, facilitating the loss of heat. This process is crucial for regulating the planet's temperature. Understanding these mechanisms is essential for grasping how Earth maintains its thermal balance.
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How does it leave the Earth if it can only be transferred through matter and there's space outside our atmosphere?
 
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39ster said:
How does it leave the Earth if it can only be transferred through matter and there's space outside our atmosphere?
There are three processes which transfer thermal energy, namely convection, conduction and radiation, the latter of which does not require a medium.
 
The atmosphere, the ground, everything emits radiation.
 
39ster said:
How does it leave the Earth if it can only be transferred through matter and there's space outside our atmosphere?
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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