What is ozone layer short answer 10?
What is the Ozone Layer? The ozone layer is the layer present in the Stratosphere. It absorbs the harmful ultraviolet rays that come from the sun. Moreover, it causes harmful radiation that has a high concentration of ozone (O3) which is harmful to living beings on the earth.
What is in the ozone layer?
Most atmospheric ozone is concentrated in a layer in the stratosphere, about 9 to 18 miles (15 to 30 km) above the Earth's surface (see the figure below). Ozone is a molecule that contains three oxygen atoms. At any given time, ozone molecules are constantly formed and destroyed in the stratosphere.
What is ozone layer for Class 4?
The ozone layer is an invisible layer of protective gases that circle the earth. The ozone layer stops most of the harmful ultraviolet rays, or UV rays, from hitting Earth.
What is ozone layer Class 9?
“The ozone layer is a region in the earth's stratosphere that contains high concentrations of ozone and protects the earth from the harmful ultraviolet radiations of the sun.”
Why is ozone layer important?
The ozone layer acts as a shield for life on Earth. Ozone is good at trapping a type of radiation called ultraviolet radiation, or UV light, which can penetrate organisms' protective layers, like skin, damaging DNA molecules in plants and animals. There are two major types of UV light: UVB and UVA.
How is ozone layer formed Class 9?
The formation of O3 is a two-step reaction. In the first step, the oxygen molecule is broken down into oxygen atoms with the help of sunlight. In the second step, the collision of oxygen atoms with another oxygen atom leads to the formation of ozone.
What is ozone layer Class 7?
Ozone is a layer in the earth's stratosphere which acts as a shield absorbing ultraviolet radiation from the sun.
What is ozone hole for Class 5?
The Ozone Hole It is a local thinning of the ozone layer caused by human-made chemicals that rise to the stratosphere. Once there, these chemicals destroy ozone molecules. Scientists first detected the ozone hole in the 1970s and 80s with instruments on balloons and satellites.
What is ozone hole Class 8?
Ozone holes can be termed as the depletion of the ozone layer which is present in the upper atmosphere i.e. stratosphere at the polar region of earth. The ozone hole doesn't stop the radiation which is harmful to living things on earth and causes harmful effects such as health problems like skin cancer and eye damages.
What is an ozone layer Why is it important class 6?
The importance of ozone is defined by the fact that it protects the earth from harmful ultraviolet rays from the sun. The ozone layer is found in the upper regions of the stratosphere where it protects the earth from the harmful ultraviolet rays of the sun. These radiations can cause skin cancer in humans.
What is ozone Vedantu?
Ozone also called Triatomic Oxygen is a chemical compound made up of Oxygen atoms only. Ozone is present in the upper stratosphere which protects us from solar ultraviolet radiation by forming a protective shield against it. Natural and industrial activities also produce ozone in the lower atmosphere.
What happens when ultraviolet light strikes the ozone layer?
In the stratosphere, ozone is mainly emitted by ultraviolet radiation. When even low-energy ultraviolet radiation is absorbed by an ozone molecule,...
What are the 2 types of ozone?
Ozone molecules (O3) have three atoms of oxygen. There are two distinct layers of ozone present in the Earth’s atmosphere. The troposphere, the lay...
What is the process of ozone depletion?
They kill ozone molecules as chlorine and bromine atoms come into contact with ozone in the stratosphere. About 100,000 ozone molecules will be kil...
How the ozone layer is healing?
According to a recent report, the ozone layer is beginning to regenerate and has the ability to fully restore. Published in Nature, a research pape...
Why is ozone layer important for us?
In the stratosphere (a layer of the atmosphere between 10 and 40 km above us), much of the ozone remains where it serves as a barrier to protect th...
Overview
The ozone layer or ozone shield is a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet radiation. It contains a high concentration of ozone (O3) in relation to other parts of the atmosphere, although still small in relation to other gases in the stratosphere. The ozone layer contains less than 10 parts per million of ozone, while the average ozone concentration in Earth's atmosph…
Sources
The photochemical mechanisms that give rise to the ozone layer were discovered by the British physicist Sydney Chapman in 1930. Ozone in the Earth's stratosphere is created by ultraviolet light striking ordinary oxygen molecules containing two oxygen atoms (O2), splitting them into individual oxygen atoms (atomic oxygen); the atomic oxygen then combines with unbroken O2 to create ozone, O3. The ozone molecule is unstable (although, in the stratosphere, long-lived) and when u…
Ultraviolet light
Although the concentration of the ozone in the ozone layer is very small, it is vitally important to life because it absorbs biologically harmful ultraviolet (UV) radiation coming from the Sun. Extremely short or vacuum UV (10–100 nm) is screened out by nitrogen. UV radiation capable of penetrating nitrogen is divided into three categories, based on its wavelength; these are referred to as UV-A (4…
Distribution in the stratosphere
The thickness of the ozone layer varies worldwide and is generally thinner near the equator and thicker near the poles. Thickness refers to how much ozone is in a column over a given area and varies from season to season. The reasons for these variations are due to atmospheric circulation patterns and solar intensity.
Depletion
The ozone layer can be depleted by free radical catalysts, including nitric oxide (NO), nitrous oxide (N2O), hydroxyl (OH), atomic chlorine (Cl), and atomic bromine (Br). While there are natural sources for all of these species, the concentrations of chlorine and bromine increased markedly in recent decades because of the release of large quantities of man-made organohalogen compounds, especially
Implications for astronomy
As ozone in the atmosphere prevents most energetic ultraviolet radiation reaching the surface of the Earth, astronomical data in these wavelengths have to be gathered from satellites orbiting above the atmosphere and ozone layer. Most of the light from young hot stars is in the ultraviolet and so study of these wavelengths is important for studying the origins of galaxies. The Galaxy Evol…
See also
• Nuclear winter
• United Nations Environment Programme
• Short-lived climate pollutants
Further reading
Science
• Andersen, S. O. (2015). "Lessons from the stratospheric ozone layer protection for climate". Journal of Environmental Studies and Sciences. 5 (2): 143–162. doi:10.1007/s13412-014-0213-9. S2CID 129725437.
• Andersen, S.O.; Sarma, K.M.; Sinclair, L. (2012). Protecting the Ozone Layer: The United Nations History. Taylor & Francis. ISBN 978-1-84977-226-6
Science
• Andersen, S. O. (2015). "Lessons from the stratospheric ozone layer protection for climate". Journal of Environmental Studies and Sciences. 5 (2): 143–162. doi:10.1007/s13412-014-0213-9. S2CID 129725437.
• Andersen, S.O.; Sarma, K.M.; Sinclair, L. (2012). Protecting the Ozone Layer: The United Nations History. Taylor & Francis. ISBN 978-1-84977-226-6.