1. GLOBAL WARMING
By Nicole

2. What is Global Warming?
Global warming is the increase of the Earth’s average surface temperature due to a build up of green house gases in the atmosphere.
Carbon dioxide is the most common gas that causes global warming.
As temperatures increase, the climate changes.

3. Greenhouse Effect
Sunlight enters the earth’s atmosphere and most of the light is reflected back by the earth’s surface.
Greenhouse gases act as a shield trapping the sun’s energy and preventing it from leaving our atmosphere.
The trapped sunlight causes the earth temperatures to rise and change our climate and weather.
Twice in the past ten years, we’ve had the hottest temperatures ever recorded in the planet’s history.

4. The Main Cause of Global Warming
Increase of greenhouse gases in our atmosphere

5. Other Causes
Deforestation is responsible for 20-25% of all carbon emissions entering the atmosphere
Burning of fossil fuels
Population (more people=more cars, more food and more energy)

6. Greenhouse Gases Carbon Dioxide (CO2)
Fossil fuel burning, deforestation
Methane (CH4)
Rice cultivation, cattle & sheep ranching, decay from landfills, mining
Nitrous oxide (N2O)
Industry and agriculture (fertilizers)

7. Worldwide Carbon Emissions8
Liquid fuel
Total
Gas fuel
Solid fuel 7 6 5
Carbon (109 metric tons) 4 3
This spike is due to the exponential increase in the use of fossil fuels over the last 150 years. Shown here are emissions of carbon from  gas,  solid,  liquid fuels, and  the total carbon emissions.  2 1
1750
1800
1850
1900
1950
2000
Year

8. Carbon Emissions vs. Population

9. Effects of Global Warming
Rising Sea Level
Increased Temperature
Habitat Damage and
Species Affected
Changes in Water Supply

10. Proof of Global Warming
Alaska
1914
2004

11. Colorado River
Arizona
June 2002
Dec 2003

12. Melting Glaciers – Mt. Kilimanjaro
Mount Kilimanjaro is the poster child of the global warming movement, since most of the glacier has disappeared over the last 30 years. However experts agree that the shrinking of the Mount Kilimanjaro glacier is more the result of deforestation of the surrounding area than changes due to global warming.

13. Drought in Africa Lake Faguibine Lake Chad
Africa's drought troubles began well before greenhouse gases increased to any appreciable degree. The inhabitants of Northern Africa have systematically cut down trees for firewood for thousands of years. The result has been that transpiration has decreased, decreasing rainfall and expanding the Sahara Desert. Similar deforestation is now occurring over much of Africa. The result is that the deserts of North, South and East Africa are expanding, leading to drought. Coupled with global warming induced changes in precipitation, it is likely that the peoples of much of Africa will be suffering from drought and starvation in the coming decades.

14. Problems Plants and Animals will face
Temperatures of waters rise, so it is hard for fish to adapt this change.
As the earth warms, plants will have to migrate at a rate of 1.6 km per year which is 5 times higher than normal migration rate.
Polar bears are drowning because they are unable to swim the longer distances between land and the receding ice.

15. Solutions Energy Alternatives Solar Power Hydro Power Wind Power
Fuel-Efficiency

16. Things you can do! Take shorter showers, heating water uses energy
Turn off lights when you leave the room
Use compact fluorescent bulbs
Plant a tree
Recycle
Walk or carpool instead of driving
Educate others

17. Cartoons about Global Warming

18. Any Questions?
? ? ? ? ? ? ? ? ?
? ? ? ? ? ? ? ? ?