1. Section 11-3 Global Warming 2-08

2. The Earth is like a Greenhouse The atmosphere contains greenhouse gases such as water vapor, carbon dioxide, chlorofluorocarbons (CFC), methane and nitrous oxide.

4. Measuring Carbon Dioxide You need a place Far from most sources Where there is wind Where the Carbon Dioxide is mixed well in the air Mauna Loa

5. Most is absorbed by ocean Or used by plants for _______________ Why does it decrease in summer and increase in winter?

7. Since 1958 the Carbon Dioxide levels have been __________________ Highest in _________ years 420,000

9. Global Warming

10. What does the graphic tell us about the average temperature of Earth?

11. Consequences Melting Ice and Sea Levels 20-200 feet Less reflected light and more absorbed

12. Global Weather Patterns Very hard to predict Heat fuels storms More heat stronger storms

13. Human Health Heat related, allergies Disease vectors spread Ex: Malaria

14. Agriculture Extreme weather events more frequent Wipes out crops Less water more pumping of aquifers

15. Reducing the risk Even if you disagree with the concept of Global Warming Reducing emissions is a positive action

17. Kyoto Protocol Reduce greenhouse emissions to 5% below their 1990 by 2012 US would not sign