• Ozone is not extremely common:
• Ozone is both created and destroyed by ultraviolet radiation:
  1. When ultraviolet radiation strikes an oxygen molecule, the radiation is absorbed, breaking the molecule into two oxygen atoms, O. Each of these atoms then combines with an oxygen molecule, making ozone, O₃
  2. When ultraviolet radiation strikes ozone, the radiation is absorbed, breaking the molecule into an oxygen molecule, O₂ and a single oxygen atom,  

                                                                                                                                 O₂                       O₃

• Ozone creation and destruction                             

• Ozone in the atmosphere is either good or bad,

  depending on where it is:

  • Good ozone
  • Bad ozone                                        

                                                                                      O

Warning: Ozone Hole

• Is there an ozone hole? If so, what does an ozone hole look like?
• Visit this site to find out. 

4.3b Assignment - Biomes & Ozone
Scoring criteria

1. Study these pictures and watch the video's at the bottom of this page from NASA. 

2. In your own words write at least two paragraphs explaining how ozone is created and destroyed.

3. In your own words write at least two paragraphs explaining why ozone is important to life on earth.

4. Compare and contrast "good" and "bad" ozone.

5. Complete the online lab "Smog City Experiment" and attach to your questions above.

 

Honors: complete this question along with the others

1. Research information about holes in the ozone layer. Summarize what is meant by a "hole in the ozone layer"? Location of any that exist and why?

 

Research Links:

• Ozone Facts - Texas Natural Resource Conservation Commission
• The Ozone Hole - A tour from Cambridge University
• Current Ozone Research - The European Ozone Research Coordinating Unit
• Ozone and the Atmosphere - Goddard Space Center
• Stratospheric Ozone - EPA
• Total Ozone Mapping Spectrometer - NASA
• Ozone Depletion - Consortium for International Earth Science Information Network
• Introduction to Atmospheric Chemistry - York University
• Global Change Master Directory - NASA
• A Healthy Environment - Union of Concerned Scientists

Ozone in the atmosphere protects you from harmful ultraviolet radiation from the sun.