1
Q
def of greenhouse effect
A
natural process
ghg traps heat in atmosphere
keeps atm warm
2
Q
descrption of ghg
A
visible light from sun -> shortwave radiation -> earth surafce absorbs -> heats up
earth surface radiates longwave radiation -> infrared radiation -> absorbed by ghg in atm -> warm atm
3
Q
ghg e.g.
A
water vapour, CO2, methane, nitrous oxide, ozone, halocarbons
4
Q
def of enhanced ghe
A
increase in conc of ghg in the atmosphere
when human activity causes ghg to be released at a faster rate than natural emissions of ghg
