Radiation Flashcards
1
Q
Thermal radiation - infrared
A
If body absorbs radiation faster than it emits it gains energy and temperature increases
2
Q
Radiation in the earths atmosphere
A
Intensity (w/m^2)
-equator receives high intensity
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