The ozone layer and the factors contributing to its destruction

Ozone is formed in the stratosphere when oxygen molecules photodissociate after intaking ultraviolet photons.

The ozone layer and the factors contributing to its destruction

Ozone Layer Depletion What is ozone? Ozone is a gas made up of molecules that are formed by three oxygen atoms. Its molecule formula is O3. Ozone is formed when the sunlight hits oxygen molecules O2 and breaks them up into individual atoms.

The ozone layer and the factors contributing to its destruction

These individual atoms then join up with O2 molecules and make O3, or ozone. What is the ozone layer? Way up high in the Earth's atmospherecalled the stratosphere, there is a fairly high concentration of ozone molecules that are formed when the sun hits oxygen molecules.

This part of the atmosphere is called the ozone layer. Ozone is formed in the atmosphere from oxygen molecules Why is the ozone layer important? Ozone molecules in the atmosphere provide us with important protection from the rays of the sun.

Specifically, these molecules are good at absorbing certain ultraviolet rays that can cause sunburn and skin cancer.

How is the ozone layer getting damaged? It turns out that certain types of molecules can cause a chemical reaction when they come in contact with ozone molecules. This causes the ozone to break up and become unable to absorb ultraviolet light. The main molecules that are destroying the ozone layer are called chlorofluorocarbons or CFCs.

Chlorofluorocarbons CFCs Chlorofluorocarbons are a group of chemicals which are made up of only chlorinefluorinecarbonand hydrogen. They were first used as refrigerants to keep things cold. A lot of people considered CFCs miracle chemicals. Eventually they were used in a variety of products including air conditioners, spray cans, fire extinguishers, and in manufacturing foams.

Unfortunately, CFCs can eventually find their way into the Earth's atmosphere and the ozone layer. Once they get there they destroy ozone molecules and cause the ozone layer to become depleted or thinner.

CFCs became somewhat regulated, but it wasn't until that a treaty was formed called Montreal Protocol to try and stop the manufacture and use of CFCs throughout the world. CFCs were to be banned and completely eliminated in developing countries by the year A hole in the ozone over the Antarctic Effects on Health Because CFCs last so long, the ozone layer will likely continue to thin for some time in the future.

This will cause an increase risk of sunburn and skin cancer. Skin cancer can be very dangerous. For this reason you should always wear sunscreen to protect your skin when you are outside in the sun for a long time.

Strong ultraviolet rays can also damage your eyes. You can protect them by wearing sunglasses. What can we do about it? There isn't much we can do about the CFCs that were released prior to the ban, but there are some things we can do: Old refrigerators - If you have a refrigerator made before it probably uses refrigerant made from CFCs.

Get a new refrigerator and be sure to have the old one disposed of properly. If you still have one of these, it's time to get rid of it and buy a new one.

Even newer air conditioners use chemicals called HCFCs. Even though HCFCs are better for the ozone, they still contribute to the depletion, so try and use as little air conditioning as possible.-There are many factors that contribute to ozone depletion, however CFC’s are the main problem.

Ultraviolet rays break down the CFC’s that enter the stratosphere, which then releases chlorine. Chlorine is then responsible for contributing to the depletion of the ozone.

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Most skin diseases are recurrent and progressing, which can be frustrating. Skin City offers. The Montreal Protocol on Substances that Deplete the Ozone Layer (a protocol to the Vienna Convention for the Protection of the Ozone Layer) is an international treaty designed to protect the ozone layer by phasing out the production of numerous substances that are responsible for ozone was agreed on 26 August , .

The ozone layer is a belt of the naturally occurring gas "ozone." It sits to miles (15 to 30 kilometers) above Earth, and serves as a shield from the harmful ultraviolet B (UVB) radiation.

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