greenhouse effect Flashcards
1
Q
what happens
A
- sun travels to earth as short wavelength radiation
- some reflects back into space
- most passes through easily
- energy absorbed by earth
- surface of earth radiates energy as long wavelength radiation
- some interact with greenhouse gases and are trapped
- causes temperature to increase
1
Q
what are the tree greenhouse gases
A
water vapour
carbon dioxide
methane
2
Q
why do we need the greenhouse effect
A
it would be too cold for many organisms to live
