Ozone Layer
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PRESENTATION OUTLINE
WHAT IS THE OZONE LAYER?
- The ozone layer is a colorless, unstable, toxic gas, with a pungent odor and powerful oxidizing properties, formed from oxygen by electrical discharges or ultraviolet lights.
- The chemical make up balance of the ozone layer is O3.
Photo by NASA's Marshall Space Flight Center
HOW DO UV RAYS PLAY A ROLE IN THE OZONE LAYER?
- There is so much oxygen in our atmosphere, that these high-energy ultraviolet rays are completely absorbed in the stratosphere. When an ozone molecule absorbs even low energy ultraviolet radiation, it splits onto an ordinary oxygen molecule and a free oxygen atom.
Photo by Billy Wilson Photography
WHAT PRODUCTS HAVE CONTRIBUTED TO THE OZONE LAYER?
- Nonessential products include all aerosol products, pressurized dispensers, and foam products containing, or manufactured with, chlorofluorocarbons. CFC’s drift into the upper atmosphere where their chlorine components destroy ozone. CFC’s are thought to be a major cause of the ozone hole over Antarctica.
Photo by Len Radin
WHAT REGULATION HAS COME INTO PLACE TO CONTROL THE OZONE COMPLETION?
- The clean air act with provisions for protecting the ozone layer.
Photo by Tim J Keegan
