1. #4.8 Aim: How does air pollution affect the ozone layer? Agenda QOD (10) Lesson: CFCs (15) Activity: The Montreal Protocol (15) Summary (5) Do Now: 1.Why do doctors recommend that we wear sunblock? http://www.youtube.com/watch?v=2taViFH_6_Y The Ozone

2. #4.8 Aim: How does air pollution affect the ozone layer? Agenda QOD (10) Lesson: CFCs (15) Activity: The Montreal Protocol (15) Summary (5) HW #37 #4.8 Aim: How does air pollution affect the ozone layer?

3. #4.8 Aim: How does air pollution affect the ozone layer? Agenda QOD (10) Lesson: CFCs (15) Activity: The Montreal Protocol (15) Summary (5) HW #37 The Ozone layer - Protects us from UV rays - Located in the Atmosphere

4. #4.8 Aim: How does air pollution affect the ozone layer? Agenda QOD (10) Lesson: CFCs (15) Activity: The Montreal Protocol (15) Summary (5) HW #37 What is ozone? O3O3

5. #4.8 Aim: How does air pollution affect the ozone layer? Agenda QOD (10) Lesson: CFCs (15) Activity: The Montreal Protocol (15) Summary (5) HW #37 What is ozone? The hole in the ozone layer In the 1960s, scientists started to notice a very thin part of the ozone layer above the Antarctic. What do you think caused this hole in the ozone layer?

6. #4.8 Aim: How does air pollution affect the ozone layer? Agenda QOD (10) Lesson: CFCs (15) Activity: The Montreal Protocol (15) Summary (5) HW #37 What is ozone? CFC s Chloroflourocarbons (CFCs) are a type of air pollutant released by aerosol spraycans, refrigerators, and air conditioners. Whats so bad about turning the ozone layer into oxygen? CFCs destroy ozone by turning it into oxygen.

7. #4.8 Aim: How does air pollution affect the ozone layer? Agenda QOD (10) Lesson: CFCs (15) Activity: The Montreal Protocol (15) Summary (5) HW #37

8. #4.8 Aim: How does air pollution affect the ozone layer? Agenda QOD (10) Lesson: CFCs (15) Activity: The Montreal Protocol (15) Summary (5) HW #37 Today the ozone layer is doing much better… why?

9. #4.8 Aim: How does air pollution affect the ozone layer? Agenda QOD (10) Lesson: CFCs (15) Activity: The Montreal Protocol (15) Summary (5) HW #37 Directions 1.Draw a visual representation of the ozone layer on the top half of the page. 2.Write 5 facts about the ozone layer (use pages 146- 149) below your picture. High quality facts are worth more points!

10. #4.8 Aim: How does air pollution affect the ozone layer? Agenda QOD (10) Lesson: CFCs (15) Activity: The Montreal Protocol (15) Summary (5) HW #37 Written conversation: Why do you think the Montreal Protocol has been so successful?

11. #4.8 Aim: How does air pollution affect the ozone layer? Agenda QOD (10) Lesson: CFCs (15) Activity: The Montreal Protocol (15) Summary (5) HW #37 Summary: Why do you think the Montreal Protocol has been so successful? 5 sentences

12. #4.8 Aim: How does air pollution affect the ozone layer? Agenda QOD (10) Lesson: CFCs (15) Activity: The Montreal Protocol (15) Summary (5) HW #37 CFCs and the hole in the ozone Due tomorrow

13. DUE TODAY Page 151 #1-3 ALL #4.8 Aim: How does air pollution affect the ozone layer? Agenda QOD (10) Lesson: CFCs (15) Activity: The Montreal Protocol (15) Summary (5) HW #37