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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
Exposure to ozone can cause premature death, asthma, bronchitis, heart attacks, and any other cardiovascular problems.
For more info on ozone, go here:
http:/en.wikipedia.org/wiki/Ozone
The ozone layer is constantly being renewed by available oxygen, and UV-C from our Sun. UV-C and UV-B from the Sun also destroy ozone, but so do contaminants (and time). So "repairing itself" involves getting rid of contaminants. Some contaminants take decades to eventually leave the vicinity of the ozone layer, and nothing we can do will accelerate that process (and leave the ozone layer intact). So all we can do is wait, and stop adding old (or new) contaminants to the air.
What are the solutions to the problem of ozone depletion?
We could stop making chemicals that destroy ozone. We could stop buying products that are made in countries that are not bound by agreements to reduce or eliminate ozone destroying chemicals. About 2/3 of the man-made ozone destruction is related to CFC-11 and CFC-12.
What does the ozone do to the stratosphere layer?
Ozone layer in stratosphere blocks around 97% of the total radiation received by the earth. It acts as a blanket and keeps the atmosphere cool. It is responsible for the survival of life on earth.
What element has the greatest effect on ozone depletion?
O (oxygen), N (nitrogen), H (hydrogen), Cl (chlorine), Br (bromine)
How has the ozone layer changed over time?
It was nonexistent before there was significant oxygen in the atmosphere.
After the Great Oxidation Event, we developed our ozone layer, complete with annual ozone "holes" at each pole.
We have evidence of sporadic events punching holes in the ozone layer from time-to-time.
Since the 1700s, the ozone layer has been getting steadily thinner.
This gets us to "current events".
Are there any fluorocarbon refrigerant that cause no harm to stratospheric ozone?
Yes, hydrofluorocarbons (HFCs) do not harm the stratospheric ozone layer. However, HFCs are potent greenhouse gases, contributing to global warming. Efforts are being made to shift towards more environmentally friendly alternatives, such as hydrofluoroolefins (HFOs) and natural refrigerants like carbon dioxide (R-744) and ammonia (R-717).
Is the ozone layer of earth a solid liquid or gas?
Ozone is O3. Like oxygen but three atoms together. It is a gas and is important in filtering light rays.
The ozone layer has the usual atmospheric constituents, 78% nitrogen, nearly 21% oxygen, (argon and more), almost no water vapor, and 9 ppm of ozone at peak value. And yes, they are gases at even the very cold temperatures to be found there.
What are the sources of cfc's in the atmosphere?
the source of cfc is mainly from refrigerators n ac's...increase in the emission of cfc may lead to a hole in the ozone layer,the result of which is harmful rays such as ultra violet rays reaching out to people which causes skin cancer
Why is ozone not good in the troposphere?
In the same way that fire is good in a fireplace, but bad on your clothing...
Ozone in the upper atmosphere forms the ozone layer, which protects the earth from ultraviolet light (UV-B). Ozone at ground level is a common air pollutant which is harmful to lungs and the breathing structures of plants too.
Why is coal important to life on Earth?
There are many reasons coal is important to life on earth, a main one is power. The world runs on electricity now, and coal is a main source of power. also fires, coal has always been important in fires.
What is the importance of the ozone layer to human?
The 'ozone' layer in the upper atmosphere blocks out harmful (cancer causing) ultraviolet light from the Sun.
Ultraviolet radiation from the sun is absorbed in the atmosphere?
Most visible light is bounced back into space, while some of it is absorbed into the atmosphere.
How does lightning affect the ozone layer?
Lightning is a massive flow of electrons, that superheats gas to a conductive plasma state, and radiates broad spectrum energetic radiation... including ionizing radiation. Either the oxygen atoms in the plasma, or the ionizing radiation breaks apart oxygen molecules to make oxygen atoms, then some of these now-loose oxygen atoms combine with oxygen molecules to make ozone.
What is the layer that protects a leaf inner cells called?
A microscopic biologic organism within an individual leaf of a branch of a tree or plant.
How does the skeleton protects us from infection?
The skelton helps us by,1,protecting vital organs such as the heart and lungs and, 2, it allows our bodies to maintain there shape
What is the role of CFC in ozone destruction?
CFC's have the major role. They are the ones that deplete the ozone.
How can CFC's damage the ozone layer?
the cfc's effect the ozone layer by breaking the bond of the atoms in the ozone layer.so it pulls apart the atoms and breaks the bond and the harmful radiation comes through and hits the earth
What will happen if we don't do anything about the ozone layer?
the ozone layer is located in the lower stratosphere. This layer keeps around 95% of harmful ultraviolet( UV) radiation from touching Earth's surface. These UV rays cause cancer. There are already large amounts of people that have skin cancer with just 5% of the possible UV radiation coming in contact with Earth's surface. So if 95% more radiation where to hit Earth, skin cancer would affect everyone, and in much larger amounts. This would most likely lead to shorter life expectancy because of deaths from cancer.
What will happen in the future if the ozone hole gets bigger in size?
The ozone layer is a layer of the vital gas which protects us from the harmful UV radiations of the sun. The ozone layer is constant in concentration till disturbing factors like CFC's n HCFC's are the ones that destroy ozone. However these factors have been brought under control by humans so the ozone hole has been diminishing slowly.
How is the the ozone layer important?
This question has been answered in other categories... It permits there to be life near the surface of the ocean, and on the surface of land.
Which gases are green house effect and how are they responsible in ozone layer depletion?
Only the enhanced greenhouse effect is causing global warming.
A:No, they are completely separate issues. The above answer also has not factual. Global warming allows life to exist on this planet. Without the ability of three atom gases to trap heat, the planet would be cold and dead.ALL greenhouse effect traps heat, mostly with water vapor (75 to 80%), Carbon Dioxide (20%) and other any three atom gases (1 to 5%). Without this process we would be a cold dead planet. This is not exclusive to the theory of enhanced greenhouse effect.
The "hole" in the ozone layer is a well know effect from the long polar winters in the Southern Hemisphere and the reaction to the water vapor in the area. This issue became most apparent in 1858 (the largest known thinning year) due to naturally occurring solar flare issues. The sun creates ozone in the upper atmosphere by reacting with oxygen. Without the sun, we see a naturally occurring reduction in O3 production, thus the depletion. Winter months in the Antarctic reduce O3 by as much as 75% (3mm total to 1 mm total)
The Arctic has a similar issue during the end of it's winter, but on a very small scale. NASA refers to the small thinning area in the Arctic as the "dimple" due to the small size.
It is believed, by some groups, that man may be adding to both of these naturally occurring issues. The case is currently being made by NASA (a pro greenhouse group) that the ozone issue in the Antarctic is the cause of the increasing ice levels in the area as ozone is a greenhouse gas and the naturally occurring depletion is the cause of this increase.
Why each spring a hole developed in the ozone layer over south pole?
The annual ozone hole over the South Pole forms due to a combination of factors, including cold temperatures and sunlight triggering chemical reactions involving man-made chemicals called chlorofluorocarbons (CFCs) and halons. These chemicals break down ozone molecules, causing the thinning of the ozone layer. This process is more pronounced during the Southern Hemisphere's spring when the sun returns and temperatures drop, creating an environment conducive to ozone depletion.
