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GLOBAL WARMING

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The Main Cause of Global Warming Increase of greenhouse gases in our atmosphere Other Causes Deforestation is responsible for 20-25% of all carbon emissions entering ... – PowerPoint PPT presentation

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Title: GLOBAL WARMING


1
GLOBAL WARMING
By Nicole
2
What is Global Warming?
  • Global warming is the increase of the Earths
    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 earths atmosphere and most
    of the light is reflected back by the earths
    surface.
  • Greenhouse gases act as a shield trapping the
    suns 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, weve had the
    hottest temperatures ever recorded in the
    planets 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 peoplemore 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 Emissions
8
7
6
5
Carbon (109 metric tons)
4
3
2
1
0
1750
1800
1850
1900
1950
2000
Year
8
Carbon Emissions vs. Population
9
Effects of Global Warming
Increased Temperature
Rising Sea Level
Habitat Damage and Species Affected
Changes in Water Supply
10
Proof of Global Warming
  • Alaska

11
Colorado River
  • Arizona

June 2002
Dec 2003
12
Melting Glaciers Mt. Kilimanjaro
13
Drought in Africa
Lake Faguibine
Lake Chad
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
Fuel-Efficiency
Wind Power
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?
? ? ? ? ? ? ? ? ?
? ? ? ? ? ? ? ? ?
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