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How does the ozone layer work?

Answer

According to How Stuff Works, the ozone layer works by ultraviolet light breaking apart oxygen molecules and then reforming them as ozone. Ozone converts the dangerous ultraviolet rays into harmless heat. With an adequate supply of ozone and oxygen, the ozone layer will absorb approximately 98 percent of incoming ultraviolet rays.

Oxygen molecules consist of a pair of oxygen atoms, while ozone molecules consist of three oxygen atoms bonded together. Ozone molecules are less stable, allowing them to break apart when struck by ultraviolet energy. The molecules absorb the energy and convert it to heat, severing the molecular bond and producing three individual oxygen atoms. These freed oxygen atoms are then able to bond with each other, creating either oxygen or ozone molecules.

The remaining ultraviolet energy in the stratosphere can then be absorbed by the oxygen molecules, in turn severing their bond and allowing freed oxygen atoms back into the system. While many of these atoms will reform into oxygen molecules, some will find pre-existing oxygen molecules and join them to create ozone. Every step in this process consumes ultraviolet energy and releases heat, protecting the plants and animals on the surface, while also raising the temperature of the atmosphere slightly.

Q&A Related to "How does the ozone layer work?"
Ozone is a compound consisting of three oxygen molecules bound together (O3) When ultraviolet radiation strikes ozone, it is broken down into a single (O) and double (O2) oxygen molecules
http://www.ehow.com/about_4601116_what-ozone-layer...
Relatively. high concentrations of ozone. This layer absorbs 93-99% of the suns UV light, which is potentially harming to life on earth. The ozone layer is made of the usual constituents
http://wiki.answers.com/Q/What_is_the_ozone_layer_...
See the related questions section below.
http://wiki.answers.com/Q/What_does_ozone_layer_me...
The substances that are causing ozone layer depletion are freons, CFC's etc. These are called as ozone-depleting substances (ODS)
http://wiki.answers.com/Q/How_is_the_ozone_layer_d...
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