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No. CFCs from man are causing the hole in the ozone layer.
Ozone is a protective layer in the upper atmosphere. It is formed, when oxygen molecules absorb short wavelength ultra violet radiations from the sun. Ozone is mostly destroyed by free radicals in the atmosphere.
When compounds like CFCs (chlorofluorocarbons) and other halocarbons are released, they are dissociated by sunlight into chloride radicals. These radicals attack ozone, thereby decreasing its concentration. This results in a thinning of the ozone layer, and in polar regions, a hole.
The holes occur at the poles, and usually in Antarctica because of the extreme cold. During the winter polar stratospheric clouds form which are able to convert gases in the atmosphere into Cl (chlorine) and ClO (chlorine monoxide). When the sun arrives at the end of winter, that is the trigger to begin. This is why the hole is largest in spring.
Another view:
Unfortunately many people confuse the natural hole that we see annually in the ozone layer over the Antarctic, with the possibility of ozone depletion over the entire planet. CFC's, while not a significant factor are not a major factor in this annual event that has always occurred since the atmosphere first contained oxygen.
Looking at the complete picture we see the major reasons for the hole include:
1. Natural chemical reactions (this is why the hole is so much larger in the Antarctic then the dimple in the Arctic
2. Seasonal variations in sunlight. (Ozone is naturally decays into oxygen, so we need sunlight to create more ozone) This is why the hole only occurs during the long winter months
3. Special isolation issues associated with the Antarctic
4. ozone depleting chemicals from nature and man. (anything with chlorine. like salt water)
5. Volcanic aerosols and stratospheric clouds.
The lack of sunlight hitting the Antarctic causes this very natural event and is exacerbated by the other conditions. This is also why the ozone returns to normal within weeks of daylight returning to the area. We know that this hole has been happening for many years before the invention of CFC's by man. In fact, the largest single thinning of this layer happened with zero CFC's present. Solar discharges in 1859 caused the single largest thinning of the ozone layer. In just this one event, it managed to thin the layer by 5%.
Check out the related peer review article below that explains the nature of the hole and why it is predominately a natural event.
Wiki User
∙ 12y ago
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If the ozone layer gets significantly thinner during your lifetime what changes might you need to make in your lifestyle?
You might need to curb CFC's. they react with ozone to deplete it.
What gas can make ozone layer stronger stronger?
Only ozone can make itself stronger. It will make ozone layer thick.
What chemicals make up the ozone layer?
The ozone layer is made up of ozone molecules only. These molecules are reactive in nature.
How do you make cardboard models to explain the causes of hole in the ozone layer?
A cardboard model in the form of cylinder can be made. The top circle being the ozone layer and the bottom being the land. You can show all phenomenon in the middle.
What are the holes in the ozone layer?
The Ozone Hole present in the ozone layer over the antarctic region is not actually a hole. It is the the thinning of the ozone layer below a certain level which is defined as the ozone hole. The formation and depletion of ozone is a natural ongoing process because of which the ozone layer keeps intact in the stratospheric region. However due to the use of CFC's the rate of formation is ozone is lesser than the depletion i.e. the CFC's are depleting more of ozone to make the ozone hole go bigger day by day.
What substances can make the ozone layer becomes thinner?
Chlorofluorocarbons (CFCs).
If the ozone layer gets significantly thinner during your lifetime what changes might you need to make in your lifestyle?
You might need to curb CFC's. they react with ozone to deplete it.
What gas can make ozone layer stronger stronger?
Only ozone can make itself stronger. It will make ozone layer thick.
Describe The destruction of The ozone layer by CFCs?
The CFC's are present in the ozone layer. They make oxides with ozone and deplete it.
What can you do about it ozone layer?
Curb the CFC's. This will make ozone replenish.
What chemicals make up the ozone layer?
The ozone layer is made up of ozone molecules only. These molecules are reactive in nature.
What is up with the ozone layer?
Ozone layer depletion is going on as CFC gases which are pollutants are responsible for the depletion of ozone layer. CFC convert ozone to oxygen and make it useless for the absorption of UV radiation.
How could the Ozone layer be fixed?
The ozone layer can be fixed. It can be done when we plant trees to make the environment clean.
Is it possible to make an artificial ozone layer?
no its not
Which gases helps make the earth protection shield?
Ozone in the ozone layer.
How does ozone layer damage?
CFC gases are responsible for the depletion of ozone layer. CFC convert ozone to oxygen and make it useless for the absorption of UV radiation.
How Is the ozone destoryed?
Ozone layer is destroyed because of CFC gases which are pollutants are responsible for the depletion of ozone layer. CFC convert ozone to oxygen and make it useless for the absorption of UV radiation.
