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Question
What depletes ozone in the stratosphere? How does this affect human life?
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Solution
- The ozone layer in the stratosphere absorbs a portion of the radiation from the sun, preventing it from reaching the planet's surface.
- When chlorine and bromine atoms come into contact with ozone in the stratosphere, they destroy ozone molecules.
- One chlorine atom can destroy over 100,000 ozone molecules before it is removed from the stratosphere.
- Some compounds release chlorine or bromine when they are exposed to intense UV light in the stratosphere.
- These compounds contribute to ozone depletion, and are called ozone-depleting substances (ODS) which include chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), carbon tetrachloride, and methyl chloroform.
The ozone layer absorbs the portion of UV light called UVB. UVB has been linked to many harmful effects, including skin cancers, cataracts, etc.
- The ozone layer in the stratosphere absorbs a portion of the radiation from the sun, preventing it from reaching the planet's surface.
- When chlorine and bromine atoms come into contact with ozone in the stratosphere, they destroy ozone molecules.
- One chlorine atom can destroy over 100,000 ozone molecules before it is removed from the stratosphere.
- Some compounds release chlorine or bromine when they are exposed to intense UV light in the stratosphere.
- These compounds contribute to ozone depletion, and are called ozone-depleting substances (ODS) which include chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), carbon tetrachloride, and methyl chloroform.
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