Radiation Flashcards

1
Q

Thermal radiation - infrared

A

If body absorbs radiation faster than it emits it gains energy and temperature increases

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2
Q

Radiation in the earths atmosphere

A

Intensity (w/m^2)
-equator receives high intensity

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3
Q

Global warming

A

1) CO2 and other greenhouse gasses scatter infrared radiation back down to earth
2) earth absorbs some infrared or re-emits some into space
3) if the r-emission rate is slowed by greenhouse gasses, the earths average temperature rises
5) when emission rate equals absorption rate temperature stabilises at a new higher temperature

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