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Global%20Warming

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Global Warming How does global warming affect us? Global Warming The world is now warmer than it has been for many thousands of years. Some scientists believe that in ... – PowerPoint PPT presentation

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Title: Global%20Warming


1
Global Warming
  • How does global warming affect us?

2
Global Warming
  • The world is now warmer than it has been for many
    thousands of years. Some scientists believe that
    in the future it will get even hotter. This is
    called global warming and may cause serious
    problems on our planet.

3
The Greenhouse effect
  • The earth is surrounded by a layer of gases
    including carbon dioxide.
  • These keep the earth warm by preventing the
    escape of heat that would normally be lost from
    the atmosphere
  • The gases act rather like the glass in a
    greenhouse. They let heat in but prevent most of
    it from getting out.

4
Fossil Fuels
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11
Englands coastline could be flooded if global
warming continues
12
Northern ports become ice free
Short term winters, long dry summers
Decrease in grain harvest
Increase in farming
Poor rice crop
Storms
Decrease in fishing catch
Rise in Sea Level
13
Graph Showing Carbon Dioxide Levels (1700-2100)
14
Effects of Global warming
  • Nobody knows the exact effects some things that
    may happen could be
  • Polar ice caps and glaciers would start to melt
    as temperatures increased
  • Low lying areas would be flooded
  • Some plants and animals would become extinct
  • Heating and energy bills could be reduced
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