What is ozone layer and how it isgetting depleted?

Answer 1

ozone is a layer (small on the equator thick at the poles) of O3. (3 oxygen atoms bonded) 15 km to 35 km in the air discovered in 1913 by the French.

Ultraviolet light (UVa UVb UVc) c=kills b=sunburn a=possible dna damage. O3 absorbs UVA and most of UVB

The ozone layer can be depleted by free radical catalysts, including nitric oxide (NO), hydroxyl (OH), atomic chlorine (Cl), and atomic bromine (Br). While there are natural sources for all of these species, the concentrations of chlorine and bromine have increased markedly in recent years due to the release of large quantities of manmade organohalogen compounds, especially chlorofluorocarbons (CFCs) and bromofluorocarbons. These highly stable compounds are capable of surviving the rise to the stratosphere, where Cl and Br radicals are liberated by the action of ultraviolet light. Each radical is then free to initiate and catalyze a chain reaction capable of breaking down over 100,000 ozone molecules. Ozone levels, over the northern hemisphere, have been dropping by 4% per decade. Over approximately 5% of the Earth's surface, around the north and south poles, much larger (but seasonal) declines have been seen; these are the ozone holes.

Answer 2

until recently we had no satellites that could monitor the ozone it was just a theory that the ozone was being effected by pollution. Now that we can see the damage that has caused a great big hole in the ozone there are some scientists who believe that every couple hundred years the earth does this naturally. This is not to say that we as humans have not sped things up a little. With the weather patterns and the change in the Arctic we are in for a major change soon. But who is to say that we might not stop this from happening if we change what we use. Planting more trees helps the environment by getting the co2 out of the air. Plants are a big part of our environment and yet we keep building more.I hope this helped a little.

Answer 3

Is a layer that protected us from being burn by the ultraviolet waves from the sun and is getting depleted because us humans who use products that contains CFC. When u buy something always look for a sing that says ozone layer friendly or free of CFC. Also the old refrigerators every time u open one u release CFC to the ozone layer. Take care of the planet because we might not have one if we still behaving like we have been in the last 100 years..

Answer 4

The ozone layer, or ozonosphere layer (rarely used term), is the part of the Earth's concentrations of ozone (O3). "Relatively high" means a few parts per million—much higher than the concentrations in the lower atmosphere but still small compared to the main components of the atmosphere. It is mainly located in the lower portion of the stratosphere from approximately 15 km to 35 km above Earth's surface, though the thickness varies seasonally and geographically.[1] The ozone layer was discovered in 1913 by the French physicists Charles Fabry and Henri Buisson. Its properties were explored in detail by the British meteorologist G. M. B. Dobson, who developed a simple spectrophotometer that could be used to measure stratospheric ozone from the ground. Between 1928 and 1958 Dobson established a worldwide network of ozone monitoring stations which continues to operate today. The "Dobson unit", a convenient measure of the total amount of ozone in a column overhead, is named in his honor.

The ozone layer can be depleted by free radical catalysts, including nitric oxide (NO), hydroxyl (OH), atomic chlorine (Cl), and atomic bromine (Br). While there are natural sources for all of these species, the concentrations of chlorine and bromine have increased markedly in recent years due to the release of large quantities of manmade organohalogen compounds, especially chlorofluorocarbons (CFCs) and bromofluorocarbons. These highly stable compounds are capable of surviving the rise to the stratosphere, where Cl and Br radicals are liberated by the action of ultraviolet light. Each radical is then free to initiate and catalyze a chain reaction capable of breaking down over 100,000 ozone molecules. Ozone levels, over the northern hemisphere, have been dropping by 4% per decade. Over approximately 5% of the Earth's surface, around the north and south poles, much larger (but seasonal) declines have been seen; these are the ozone holes.

Answer 5

ozone is 3 oxygen atoms (O3). Basically it protects us from harmful UV rays. CVC gases (used to be found in aerosol cans and fridges) break the bonds of ozone and break it down. therefore rays get through and you get burnt. this is basically what happens anyway. heaps of books on it. you should read them before checking the net because there is a lot of dodgy stuff on here.

Answer 6

the ozone is buffer between earth and sun..without it we would burn up...the emisiions etc..that we are putting out is collecting in the ozone and a hole is forming...allowing for varying temperatires