Radiation

Question 1

Thermal radiation - infrared

Answer 1

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

Question 2

Radiation in the earths atmosphere

Answer 2

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

Question 3

Global warming

Answer 3

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