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Global Warming

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Global Warming What is global warming? Global warming is the gradual increase of the Earth s average temperature. It has been an issue for over 500 years. – PowerPoint PPT presentation

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Title: Global Warming


1
Global Warming
2
What is global warming?
  • Global warming is the gradual increase of the
    Earths average temperature.
  • It has been an issue for over 500 years.

3
What causes it?
  • Man made and natural causes that increase
    greenhouse gases
  • Exhaust gases from cars
  • Exhaust gases from factories
  • Methane gas from animals
  • Methane gas released when a tundra melts

4
Which Greenhouse Gases?
  • Carbon dioxide is the largest contributor. It
    comes from burning fossil fuels and exhaust from
    cars.
  • Methane from cows, rice growing and mining.
  • CFCs from air conditioning units, refrigeration
    applications and aerosol propellants.

5
How does it effect us?
  • Increase in Earths surface temperature
  • Hotter summers and warmer winters
  • Rise in the Earths sea level
  • More floods and impact to fresh water supply
  • Crop production
  • May increase in the U.S.
  • May decrease in other less developed countries
  • The spread of disease
  • Warmer wetter weather could increase the spread
    of infectious diseases carried by insects

6
What can we do about it?
  • Find cleaner more efficient forms of energy
  • Conserve energy
  • carpooling, recycling, drive more fuel efficient
    cars
  • Plant trees

7
What else can we do about it?
  • Drive 100 fewer miles per week and fly 3000
    fewer miles per year.
  • Turn the thermostat down by 2 degrees in the
    winter.
  • Replace 10 incandescent light bulbs with compact
    fluorescents.

8
Summary
  • Unless people take action to solve global
    warming it may seriously impact life on Earth.
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