Ozone gas is heavy- why is it at the top of atmosphere?
Short Answer: UV-C from the Sun is absorbed by the oxygen up high, and that allows ozone to be made up high. Ozone decays back to oxygen before it can fall very far... More Detail Ozone is not the heaviest gas, iodine heptafluoride (for example) is much heavier. Ozone is heavier than other gases commonly found in the atmosphere... Ozone is present in all layers of the atmosphere. It is concentrated in the stratosphere (which is not the "top of the atmosphere" there are more layers above it), because almost all the UV-C from the Sun is stopped there by oxygen and nitrogen, where the atmosphere's density starts really going up. Oxygen molecules broken into atoms, can yield the production of some ozone, monatomic oxygen is very short lived, so ozone is formed very quickly or not at all. As you move lower in the atmosphere, water vapor (and other contaminants) rapidly destroy ozone, so this allows ozone concentrations to decrease to near zero at Earth's surface. Oxygen molecules are broken apart by 215nm or shorter UV light (UV-C). So are nitrogen, and other atmospheric constituents. So beyond a certain depth into the atmosphere, there is insufficient 215nm or shorter light to break oxygen which can then make ozone. Then it takes a very long time (months) for gasses to diffuse in quantity large distances vertically, and ozone gas does degrade with time... so it appears this heavy gas hovers high above us. When in fact it is created, and disppears before it can fall very far.
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Ozone is formed at the top because UV radaitions have convertedoxygen into ozone over there. Ozone formation is a chemicalprocess. When oxygen is treated with UV radiations ox…ygen getsconverted into ozone.
Ozone protects us from the harmful UV light of the sun. It is veryimportant for our survival.
Ozone is an important gas. It is present in stratosphere.
The stratosphere has the most ozone in it. The ozone layer is located near the bottom of the stratosphere, and reaches a peak concentration of about 9 ppm.
See " What is the ozone layer? "
The stratosphere. Unfortunately, due to pollution, ozone in the stratosphere is becoming depleted while ozone in the troposphere is forming - contributing to climate change.
Ozone is present in the stratosphere of the earth's atmosphere. Itprotects us from the harmful UV light of the sun.
If there was no ozone the harmful ultraviolet radiations of the sun would reach the earth easily and would cause a no. of harmful diseases and problems to the human race. Thes…e problems include the skin cancer, eye cataract and the suppression of immune system.
The short Answer is di-atomic Oxygen or O2. Ground-level Ozone What is ozone? O 3 is a colorless, odorless gas at ambient concentrations and is a major compone…nt of smog. What are the sources of ozone? Ground-level ozone is not emitted directly into the atmosphere. It results from photochemical reactions between oxides of nitrogen (NO x ) and volatile organic compounds (VOCs) in the presence of sunlight. High levels typically occur from May to September, between noon and early evening. What are the effects of ozone? O 3 irritates the respiratory tract and eyes. Exposure to high levels of O 3 results in chest tightness, coughing and wheezing. People with respiratory and heart problems are at a higher risk. Ozone has been linked to increased hospital admissions and premature death. Ozone causes agricultural crop loss each year and noticeable leaf damage in many crops, garden plants and trees. The "good" ozone layer in the stratosphere protects life on Earth from the Sun's harmful ultraviolet (UV) rays. "Bad" ozone at ground-level is harmful to breathe and damages crops, trees, and other vegetation.
The ozone has very very small amount. It is just present as the ozone layer.
Stratosphere is rich in ozone gas. It contains the ozone layer.
Stratosphere contains most ozone. It is in the form of ozone layer.
In Air Pollution
Ozone is concentrated at 20-40 km above earth with highestconcentration 6-8 parts per million. It is present in thestratosphere of the earth's atmosphere.
In Ozone Layer
Ozone is O 3 , and is necessary to maintain in the atmosphere because it limits the UV rays that can enter the earth's atmosphere. If these are not limited, humans and other a…nimals would be exposed to more cancer causing UV Rays. Depletion of the ozone layer is caused by certain chemicals such as CFC's, freons, and halons that were present in some refrigerants in the past. These chemicals are no longer allowed to be used.
In Ozone Layer
CFC's are responsible for ozone depletion. They react with ozone todeplete it.
In Ozone Layer
Oxygen . Virtually all of the ozone in the "Ozone Layer," which is in thestratosphere and not the troposphere where we live, is formed fromoxygen atoms and oxygen molecules. …If light with a wavelength shorter than 240 nm is absorbed by amolecule of oxygen, O 2 , then the oxygen molecule cansplit into two oxygen atoms. A photon of UV light normally cleavesthe oxygen molecule, but an X-ray may also cause the cleavage. Thusthe first step in the formation of ozone is: O 2 + hÎ½ ( 2 O . The reaction that produces ozone proceeds very slowly because itrequires that three species collide at the same time. The reactionto form ozone is: O . + O 2 + M ---> O 3 + M, whereM is usually a molecule of nitrogen, but it could be a helium atom,an argon atom, or even another oxygen molecule. The formation ofozone is exothermic, meaning that energy is released, and anotherspecies, M, is necessary to absorb this excess energy or the ozonejust formed or nearly formed may fly apart as a molecule ofdiatomic oxygen and an oxygen atom. Some ozone is created from the right cosmic radiation and amolecule of oxygen. An alpha particle and a beta particle with theright kinetic energies may collide with O 2 to formhelium and a molecule of ozone. The reaction is: Î± + Î² + O 2 ---> He + O 3 Little to none of the ozone created from pollution, lightning, orfrom other electrical discharges in the air makes its way up to theOzone Layer. Ozone is a very powerful oxidizing agent, therefore itis a very reactive species. It readily attacks rubber, causing itto harden and crack like an old rubber band, and it does damagelung tissue. Normally our body can repair any damage faster than itis created, although the elderly, the very young, or persons thatare ill are often adversely affected by what is ultimately man-madeozone.
In Ozone Layer
The layer of ozone (O 3 ) in the atmosphere absorbs UV-Csolar radiation with wavelengths above around 200 nm as well asmost UV-B radiation. UV-C radiation is very harmful to l…ivingthings, so without the ozone layer we would have to keep ourselves,our families, our pets and our plants shielded from sunlight.