1. Course: Application Software 1 (432-200C) Date : Tuesday, June 11, 2002

3. In the beginning...

4. He made heaven and earth !!

5. But Earth was dark and empty, and He said,...

6. How much light ? Just the right amount to create a perfect world !

7. But in the 1800s – something happened. A REVOLUTION !

8. at some of the effects!

9. What is my topic? What revolution triggered the onset of global warming? Industrial Revolution What does global warming mean? It is getting hotter and hotter out there.

10. Background Science The layers of earth’s atmosphere

11. More about the troposphere layer Some of the other gases have the ability to trap some forms of solar energy

12. Source of Energy The sun emits different types of rays – not all reach the surface of the earth

13. What are some of the greenhouse gases? carbon dioxide carbon dioxide water vapour water vapour methane – cows & termites produce methane – cows & termites produce nitrous oxide – automobile exhaust contains nitrous oxide – automobile exhaust contains CFCs – man-made CFCs – man-made

14. More about CFCs CFCs rise slowly into the stratosphere layer CFCs rise slowly into the stratosphere layer Decomposed by uv rays releasing chlorine Decomposed by uv rays releasing chlorine One chlorine atom can destroy 100 000 molecules of ozone One chlorine atom can destroy 100 000 molecules of ozone Overall Overall deplete the ozone in the deplete the ozone in the CFCs stratosphere layer CFCs stratosphere layer are powerful greenhouse gases in the are powerful greenhouse gases in the troposphere layer troposphere layer

15. Summary Man-made greenhouse gases are responsible for global warming. Man-made greenhouse gases are responsible for global warming. Man is to blame! – There were warnings! Man is to blame! – There were warnings! Greenhouse gases make up a small percentage of the atmosphere. Greenhouse gases make up a small percentage of the atmosphere. A small change in the quantity of greenhouse gases can have a devastating effect. A small change in the quantity of greenhouse gases can have a devastating effect.