The ozone layer is the result of an equilibrium between the creation and destruction of ozone by UV (UV creates ozone by ionizing free oxygen atoms which then combine with oxygen molecules to create ozone).
A natural thinning of the ozone layer occurs every year over Antarctica; this so-called ozone hole (blue-purple colours in this image) persists from September to December every year. Image: NASA.
ozone layer Layer of the Earth's atmosphere at an altitude of 20 to 50 km where incoming ultraviolet solar radiation is absorbed by oxygen, ozone, and nitrogen in the atmosphere.
Ozone Layer
A layer in the lower part of Earth's stratosphere (about 20-60 km above sea level) where the greatest concentration of ozone (03) appears. This is the layer responsible for the absorption of ultraviolet radiation.
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Ozone Layer
In earth's atmosphere, the layer of oxygen ions (O3) lying 15 to 30 km high that protects the surface by absorbing ultraviolet rays.
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OZONE LAYER
A layer of the Earth's atmosphere at a height of about 20 to 50km containing small amounts of ozone (a molecule composed of three oxygen atoms).
Ozone layer
The ozone layer is a layer in Earth's atmosphere which contains relatively high concentrations of ozone . This layer absorbs 93-99% of the sun's high frequency ultraviolet light, which is potentially damaging to life on earth....
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Ozone Layer
A region in the upper atmosphere that has high concentrations of ozone (triatomic oxygen, 03). The ozone layer protects the Earth by absorbing the Sun's high-energy ultraviolet radiation.
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OZONE LAYER
The ozone layer is a region of the stratosphere which contains most (about 90%) of the Earth's atmospheric ozone. It is about 10-25 miles (15-40 km) above the Earth's surface.
ozone layer - (n.)
layer of Earth's atmosphere at about 20 to 30 miles, marked by a high ozone (O3) content.
polycyclic aromatic hydrocarbon (PAH) - (n.) ...
Our ozone layer (which protects us against UV radiation) would be completely destroyed and the atmosphere would be polluted with toxic radioactive particles, produced by the intense gamma radiation.
The ozone layer is a region of the which contains most (about 90%) of the atmospheric ozone. It is about 10-25 miles (15-40 km) above the Earth's surface. The ozone layer shields the Earth from Ultraviolet B rays that come from the .
On Earth, the ozone layer is several kilometers above this, and the ozone prevents ultraviolet light from destroying water in our atmosphere.
Venus springs ozone layer surprise BBC - October 8, 2011
Scientists have discovered that Venus has an ozone layer.
ozone layer (NASA SP-7, 1965) = ozonosphere. ozonosphere (NASA Thesaurus / NASA SP-7, 1965) The general stratum of the upper atmosphere in which there is an appreciable ozone concentration and in which ozone plays an important part in the ...
the formation of the ozone layer through ultraviolet dissociation of oxygen molecules followed by recombination to form ozone. Uma, U Maj International Astronomical Union abbreviations for Ursa Major. See constellation.
The stratosphere contains the ozone layer, the part of the Earth's atmosphere which contains relatively high concentrations of ozone.
Once in a while, a truly massive plume of hot rock from the Earth's mantle can erupt through the crust for centuries or even millenia, producing acid rains, destruction of the ozone layer from emissions of chlorine-bearing compounds, ...
The Stratosphere and Ozone Layer
Above the troposphere is the stratosphere, where air flow is mostly horizontal. The thin ozone layer in the upper stratosphere has a high concentration of ozone, a particularly reactive form of oxygen.
This change enabled the proliferation of aerobic organisms as well as the formation of the ozone layer which, together with Earth's magnetic field, blocks ultraviolet solar radiation, permitting life on land.
Within the past couple of decades, the ozone layer has been partially destroyed by some of the chemicals used in modern devices.
Another effect is the varying thickness of the ozone layer, the stratospheric gas which protects us from the Sun's ultra-violet emisions.
The Earth has a protective layer known as the Ozone Layer. This important shield protects the Earth from the Sun's ultraviolet radiation. Venus does not have an ozone layer.
The ozone layer, an important shield keeping out the more dangerous UV radiation, is situated 50 km above ground level.
The Earth's ozone layer blocks the majority of the Sun's uv-radiation, which is beneficial for us but hampers ground-based ultraviolet astronomy. Instead, ultraviolet-wavelength telescopes must be put into space on satellites.
The winter hole in the ozone layer above Antarctica appears to have grown from last year but is still smaller than in 2003, when it was at its largest, according to the World Meteorological Organization.
Earth's atmosphere is completely opaque to X-rays; ultraviolet radiation is absorbed by electronic transitions in the ozone layer, but it is possible to get above some of it in balloons and rockets.
Is the ozone layer recovering?
Is air quality getting worse?
How is the climate changing?
On the Earth, this is because the ozone layer absorbs solar ultraviolet radiation. Not only does the ozone preventing these deadly rays from reaching the surface, it also heats up the stratosphere. As a result, the stratosphere is stagnant.
An ultraviolet telescope recieves UV rays (a type of electromagnetic radiation with very short wavelengths) from space. Since the ozone layer traps much of the Sun's ultraviolet energy coming through Earth's atmosphere, ...
At first the oxygen combined with various elements (such as iron), but eventually oxygen accumulated in the atmosphere, resulting in mass extinctions and further evolution. With the appearance of an ozone layer (ozone is an allotrope of oxygen) ...
When it does, it might affect the Earth's upper atmosphere (the ozone layer) and any objects in it. In the late 19th century, a giant eruption was observed on eta Carinae that appeared as a supernova event, but the star survived.
Such events can severely damage the ozone layer and lead to strong disruptions to the food chain. Of course, this is only speculation, but it does make you wonder what would happen if one of these things went off nearby today.
Because atmospheric interference from the ozone layer, oxygen, and nitrogen makes UV radiation difficult to observe from ground-based telescopes, high-altitude balloons, sounding rockets, and orbiting observatories are employed.
The discovery last year of possible microscopic fossils in a Martian rock may further strengthen this idea. The surface of Mars, however, is pummeled with ultraviolet light, as Mars has no ozone layer to protect it from these occasionally deadly ...
 See also: Ozone, Earth, Atmosphere, Light, Period
  
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