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Greenhouse09

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Transcript

  • 1. Observe the experiment
    • Which thermometer will be the hottest?
      • How does this model the earth
      • Lamp =
      • Beaker =
      • Black paper=
      • What’s going on here?
  • 2. The Greenhouse Effect
  • 3. What causes the Greenhouse Effect?
  • 4. “Greenhouse Gases”
    • CO2
    • H20
    • CH4 (methane)
    • NO (nitrous oxide)
    • CFCs (chloroflourocarbons)
    • How do we contribute to the production of these gases?
  • 5. Climate Change Public Enemy #1: CO2
    • What’s so bad about CO2?
    • Important logical steps
  • 6. The Real Question: Is it our Fault?
    • Are global temperatures increasing?
    • Are global CO2 concentrations increasing?
    • Does the greenhouse effect cause warming?
    • Does CO2 contribute to the greenhouse effect?
    • Are they measurable or testable ?
  • 7.
    • The average temperature on earth has raised 25% since the early 1800s
    • The average temperature has raised 10% since 1958
    • The current rate of increase is .4% per year
  • 8.  
  • 9. Global Climate is cyclical
    • Global warming may not be purely anthropogenic
  • 10. Global T and CO2
    • Correlation vs causation
    • What makes this graph so convincing?
  • 11. The Real Question: Is it our Fault?
    • Are global temperatures increasing?
      • Yes- scientifically measurable
    • Are global CO2 concentrations increasing?
    • Does the greenhouse effect cause warming?
    • Does CO2 contribute to the greenhouse effect?
    • Are they measurable or testable ?
  • 12. How much of our atmopshere is CO2 anyway? Are we worried about running out of oxygen?
  • 13. What makes up the atmosphere?
    • Mostly nitrogen
    • Next most is O2 (how did it get there?)
    • Noble gases, water vapor, CO2
  • 14. Is the goal to eliminate CO2 from our atmosphere entirely?
  • 15. We the Carbon Cycle
    • We also Homeostasis
  • 16. Draw a graph of global CO2 concentration time CO2
  • 17. Seasonal Changes
  • 18. Changing compositions
    • In 1850 CO2 concentration was 280 ppm and today (2004) it is 350 ppm
    • Worldwide- increases average 50% over their 1850 levels
    • To what, historically can we attribute this change?
  • 19. US & China Emissions
  • 20. More retrospection
    • How do we get this data anyway?
  • 21. Method: Ice Coring
  • 22. The Real Question: Is it our Fault?
    • Are global temperatures increasing?
      • Yes- scientifically measurable
    • Are global CO2 concentrations increasing?
      • Yes- scientifically measurable
    • Does the greenhouse effect cause warming?
    • Does CO2 contribute to the greenhouse effect?
    • Are they measurable or testable ?
  • 23. Is the greenhouse effect bad?
  • 24. Earth without the greenhouse effect?
    • Global temperatures = 1C
    • How would that change things?
  • 25. What happens if there are more of these greenhouse gases
    • More sunlight bounces off of them back to the earth’s surface
  • 26. The Real Question: Is it our Fault?
    • Are global temperatures increasing?
      • Yes- scientifically measurable
    • Are global CO2 concentrations increasing?
      • Yes- scientifically measurable
    • Does the greenhouse effect cause warming?
      • Yes- scientifically demonstrable?
    • Does CO2 contribute to the greenhouse effect?
    • Are they measurable or testable ?

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