OZONE ACTIVITY 2021 Part 1 is a website with information to look at. Parts 2 and 3 are videos. PART 1: Go to the website: 1. Describe where the stratosphere is. https://www.ozonelayer.noaa.gov/ 2. What types of devices does NOAA use to monitor stratospheric ozone? Click on SCIENCE on the top blue bar, and then the link to OZONE BASICS 3. How many ozone molecules are there per 10 million air molecules in the atmosphere? 4. What is the region of ozone called in the stratosphere layer? 5. How is ozone, the pollutant, which is found near the surface of Earth, like or unlike stratospheric ozone? 6. Which ozone is known as the "good ozone?" 7. What would happen if ozone were not present in the stratosphere? 8. What are some harmful effects of ground-level or "bad" ozone? 9. Near-surface ozone is a key component of what? 10. How much of the ozone is gone over Antarctic during Antarctic spring?. 11. What chemicals are the biggest culprits for loss of ozone? List three: 1. 2. 3. 12. What did the Montreal Protocol state? What does chlorine act as in the breakdown of ozone? Why is the ozone hole found by the poles? What did the Montreal Protocol ultimately do? Part 3 Go to the following link: https://www.youtube.com/watch?v=mQpa_NYXUGI What would happen if there was no ozone layer? List two things. a. b. Why were CFCs praised as a great chemicals? a. b. Where were CFCs found? b. What was voluntarily removed from aerosol cans? Why was the Montreal Protocol written with "flexibility?" How does the limiting of CFCs help us with another global atmosphere problem of carbon dioxide emissions? What are companies doing in regards to global climate change? Why may it be more challenging to improve global emissions that contribute to climate change compared to reduction of CFCs? What does UVC contribute to? What element does chlorofluorocarbons release into the atmosphere? What was the purpose of the Montreal Protocol? Name two things that tropospheric ozone can lead to. a. b. What layer of the atmosphere has the most ozone? How is ozone formed? Describe the concept of solar formation of ozone, with equations. Describe the concept of solar breakdown of ozone, with equations. Explain how solar formation/breakdown is a cycle. Which type of radiation is completely filtered out by ozone. Describe the chemical make-up of chlorfluorocarbons. How does the chlorine get free from CFCs? What does the Chlorine atom do up in the stratosphere in relation to oxygen/ozone? Click on SCIENCE once again on the top blue bar. Then click on REGIONS OF THE ATMOSPHERE 13. List three facts about the troposphere: 1. 2. 3. 14. List three facts about the stratosphere: 1. 2. 3. Click on SCIENCE once again on the top blue bar. Then click on OZONE DEPLETION 15. Describe the uses of CFCs (Chlorofluorocarbons) 16. How long does it take for CFCs to reach the stratosphere? 17. What elemental part of CFCs attacks ozone?. 18. Why is UV-B bad? Click on SCIENCE once again on the top blue bar. Then click on ANTARCTIC OZONE HOLE 19. When was ozone loss first reported? 20. List the steps of how the ozone hole is formed in the Southern Hemisphere/Antarctica: 1. 2. 3. 4. 21. When should chlorine/bromine reach maximum levels in the stratosphere? 22. When should full recovery of the ozone layer occur? 23. What may happen in terms of temperature in the stratosphere? 24. What does this change in temperature potentially mean for ozone? Part 2 Click on the following video link: https://www.youtube.com/watch?v=dLXJV4A6KPE Where is "good" ozone found? What types of radiation does ozone protect us from? Where did all life forms have to exist before the ozone layer was fully formed? What would happen by the year 2060 if chlorine would have kept entering the stratosphere? What is the chemical structure of ozone? Where is "bad" ozone found and why is it bad? List two characteristics of UVA radiation a. b. Which is the most damaging UV radiation?