1. Greenhouse
Earth

2. Greenhouse effect:
1. sunlight streams
through
atmosphere & hits
Earth.

3. 2. Hot air rises
- some air escapes to
space
- some air is trapped
by gases in the
troposphere

4. Greenhouse Gases:
gases that
trap & radiate
heat

6. Greenhouse Gases
qwater vapor methane
q
qCO2 qnitrous
qchlorofluoro oxide
-carbons
(CFCs)

8. Greenhouse Gases
Which
greenhouse
gas is the CO2
most
important?

9. Why?
Extra CO2 in the
atmosphere traps
more heat.
This CO2 comes
from:

10. 1. burning
fossil fuels

11. 2. Deforestation
(less plants left
to absorb CO2)

14. Global Warming
avg. temp of Earth may
increase by ~4° F by
2050.

16. Consequences
1. more hurricanes,
droughts, and
floods

17. Consequences
2. Weather patterns
change

18. Consequences
3. Higher sea levels
(some coasts under
water)

19. Slow down GH Effect
1. reduce use of
fossil fuels

20. Slow down GH Effect
2. preserve
forests, plant
trees