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Global Warming

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Title: Global Warming Author: BPS Last modified by: BPS Created Date: 4/13/2010 7:01:43 PM Document presentation format: On-screen Show (4:3) Company – PowerPoint PPT presentation

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Title: Global Warming


1
Global Warming
  • By Ben Iverson

2
The Main Cause of Global Warming
  • Electrical pollution is one of the causes of
    global warming. Click Here

3
Electrical pollution
  • Electricity pollutes in many ways
  • Mostly fossil-fuels are burned for electricity
    causing pollution.
  • Fossil fuels are mostly dead and decayed plants
    and animals. An example of fossil fuels are oil,
    petroleum, and gasoline.
  • When we burn fossil fuels we pollute the air with
    harmful gasses. Some of these gases are green
    house gasses.

4
Green house effect
  • Pollutants when released in the air form a
    shield like thing. When the sun shines on the
    shield the rays come down to earth and bounces
    back up. When the ray comes back to the shield
    it bounces back down repeating the process many
    times. That is the green house effect.

5
Why people are worried
  • People are worried because the green house
    effect will speed up global warming, people are
    worried about global warming because the earth
    would be so hot and uncomfortable life would be
    torture and the earth would be so polluted if we
    went outside we wouldnt be able to see our own
    hand. Another reason is that global warming could
    melt the polar ice caps our main source of water.
    The sea level has risen about 15 to 20 cm (6 to 8
    inches) in the last 100 years, that is proof that
    the ice caps are melting.

6
Bibliography
  • "Global Warming." Oracle ThinkQuest Library. Web.
    29 Apr. 2010. lthttp//library.thinkquest.org/CR021
    5471/global_warming.htmgt.

7
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