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Ozone Layer
The ozone layer is a crucial layer in the Earth's atmosphere that absorbs and blocks out harmful ultraviolet light that can damage Earth.
3,889 Questions
What helps protect Earth from ultraviolet radiation?
There are three. In order of the amounts they protect us:
# nitrogen, absorbs UV-C and more energetic radiation, ~78% of the atmosphere
# oxygen, absorbs UV-C and more energetic radiation, ~21% of the atmosphere # ozone, absorbs UV-B and more energetic radiation, ~0.0001% of the atmosphere
What is the stratosphere's gases?
The main gas found in the stratosphere is ozone. It is present in the form of ozone layer.
What does the ozone have to do with the greenhouse effect?
Ozone is a greenhouse gas that traps heat in the Earth's atmosphere. However, it is found in the stratosphere, not the lower atmosphere where most greenhouse gases accumulate. Ozone depletion in the stratosphere can indirectly affect the greenhouse effect by allowing more harmful ultraviolet rays from the sun to penetrate Earth's surface, leading to warming.
What is a cfc found in the troposphere?
Chlorofluorocarbon (CFC) is an organic compound that contains carbon, chlorine, and fluorine, produced as a volatile derivative of methane and ethane.
They were commonly used as refrigerants, and for propellants for aerosol sprays, though they have been mostly phased out due to the fact that they cause ozone depletion.
How is ozone formed over the troposphere?
Ozone forms over the equator where the rays of sunlight are the strongest and then flows toward the poles.
How do you prevent holes in ozone layer?
The ozone hole is a natural occurrence. You cannot prevent it.
You might keep it from starting sooner, have more ozone in it, or from lasting longer.... but you cannot stop it from forming once a year at each pole when it is late winter / early spring there.
Why is there much concern about the hole in the ozone layer?
Thicker atmosphere does not stop UV-B. Only ozone in our atmosphere stops UV-B from damaging the DNA of all surface life on Earth. And even though the ozone hole is a natural phenomenon, the size of the hole is an indication of, it does appear, the effects of Man on this protective ozone layer.
Which layer of the atmosphere is furthest from earths surface?
Cirrus clouds are very high in the atmosphere making then furthest from the Earth's surface. They are very thin and wispy in appearance.
What are the causes of stratospheric ozone loss?
Man made and natural processes lead to breakdown of ozone. Natural are UV rays and man made are CFC's.
Why do we need the ozone layer?
- It protects the DNA of all surface life.
- It protects humans from skin cancers and eye cataracts
- Without the ozone layer, you would burn to death. The sun's UV rays would strike the earth and kill every living thing.
- See the related question below.
What is the layer that protects the earth from ultraviolet rays from the sun?
The UV rays must pass through atmosphere. So the layer must be in Atmosphere. The layer of the atmosphere is he ozone layer.
What is the fuction of the ozone layer?
The ozone layer protects the Earth from the ultraviolet (UV) rays of the sun, which are harmful to us. Without the ozone layer, the effects of global warming would happen at a much faster rate, and UV rays can be harmful to many forms of life.
Does the ozone destroy chlorofluorocarbon molecules?
In general, no. If a molecule has a double carbon=carbon bond, ozone will attack it. Otherwise, ozone will have no effect on such molecules. High energy sunlight however, such as found near the ozone layer, can split chlorine off CFCs.
Recovering the ozone layer involves reducing the emissions of ozone-depleting substances, such as chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs). International agreements like the Montreal Protocol have been instrumental in phasing out these substances. Additionally, promoting sustainability and green technologies can help protect and restore the ozone layer.
Are sales of CFC and HCFC banned?
Most countries abide by the ban on chlorofluorocarbons. The few that do not are small and are not considered significant contributors. They may also (eventually) face economic sanctions for continued use of CFCs.
Answer:
There is no ban of all chlorinated hydrocarbons (HFCs and HCFCs). The control of CFCs and HCFCs was covered in an accord called the Montreal Protocol. It stated several things which were agreed to by signing countries:
- There are several compounds of chloro- and Bromo- fluorocarbons that must be controlled to prevent stratospheric ozone degradation
- These substances will be controlled and eliminated on a timetable
- The timetable is stepped and adjusted to meet the needs and abilities of countries to comply with it.
- For CFCss the 1991 to 1992 controls are based on the 1986 levles of use and production
- For CFCs in 1994 the consumption and production will be no more than 25% of 1986 values
- For CFCs in 1996 the consumption and production will be no more than 0% of 1986 values
- Related , but less active CFCs (Hydrochlorofluorocarbons, the HCFCs) will be phased out on their own schedule. This is due to vital uses of compounds like Halons in firefighting and refrigeration. The use of these compounds was to replace the more active HFCs
- HCHCs are also less active as Global Warming gases
- HCFC phase out was initiated in 1996
- HCFCs will be phased out by 2030
- There are some uses of HCFCs where there are no viable alternatives. These include medical inhalers and submarine and aircraft fire fighting systems. HCFCs will be allowed to be used in these specific used without elimination
How is recycling helping the future?
Recycling helps reduce the amount of waste sent to landfills, conserves natural resources like water and minerals, and decreases the energy required to create new products from raw materials. By recycling, we can contribute to a more sustainable future by preserving resources for future generations and reducing the environmental impact of waste disposal.
What would happen if the ozone layer didn't exist?
Over 70% of our earth is water. if we didnt have water we would all die of thirst. 97% of the waters earth is salt water. 0.7% of the earths water is natural water. only the 0.7% is consumable water that is why we need to conserve water.
Can photochemical smog forms a mixture of ozone and other pollutants?
Yes, photo chemical smog can be a mixture of ozone and other pollutants. Ozone is also a pollutant at ground level.
What is the process called when ozone is produced?
See "How is ozone made?" in the "Related questions" section below.
Which human activities cause ozone depletion?
Ozone in the atmosphere can either be stratospheric (high level) or tropospheric (ground level). Stratospheric ozone is reduced by the presence of chlorine ions from CFCs. This impact can be reduced by limiting the amount of CFCs produced, used or lost. Ground level ozone is due to atmospheric down washing of stratospheric ozone by winds passing over mountains (which we can do nothing about). It is also produced by the action of ultraviolet light on a NOx/hydrocarbon mixture in the atmosphere. These can be reduced by reducing the emissions to these compounds from human activities.
Why does earth have an ozone layer?
because if it was not there it would cause to much ultaviolet radation and that would kill us
The ozone layer plays a ital role in supporting life on land. It is because ozone blocks the harmful ultraviolet radiations which can cause fatal diseases on land creatures.
How many chlorine atoms does it take to destroy 100000 ozone molecules in the stratosphere?
It's funny because I just read in my textbook, which was printed this year 2012, that one chlorine atom can destroy "ONE Million" ozone molecules. They do not explain why. It is more then likely goofball science that no one can back up.
I'm no chem expert, but...
Cl + O3 YIELDS destruction of (thousands/millions) O3 molecules. Yeah right.
The ozone layer can recover with international efforts to reduce the emission of ozone-depleting substances like chlorofluorocarbons (CFCs). The Montreal Protocol has been successful in phasing out many of these harmful chemicals, leading to a gradual recovery of the ozone layer. Continued global cooperation is crucial for the ozone to fully recover.
Is the ozone layer always good?
The ozone layer is one of the most important characteristics which makes Earth conducive for life to exist. It protects us from the harmful rays of the sun. Otherwise, we would die due to skin cancer!!!
It can also be bad. In the troposphere it contributes to smog, and can kill you.
How those the atmosphere protect us?
Its like an invisible barrier
It protects us from the hard hard hard rays from the sun
