The science page (… You probably don't realize that every time you step outside, ozone, a gaseous … (Think of a very bad sunburn, only much worse!) This radiation is responsible for skin cancer and stunting of plant growth. Various ozone-depleting substances (ODS), however, accelerate the destruction processes, resulting in lower than normal ozone levels. Fact Check: What Power Does the President Really Have Over State Governors? javascript is enabled. But it does a very important job. Ozone is a gas in the atmosphere that protects everything living on the Earth from harmful ultraviolet (UV) rays from the Sun. Credit: NASA, Image to right: The Total Ozone Mapping Spectrometer Earth Probe spacecraft (TOMS EP) measures the amount of ultraviolet radiation getting through the atmosphere. Credit: NASA, Image above: Ozone destruction begins when chlorine and oxygen combine. Festival of Sacrifice: The Past and Present of the Islamic Holiday of Eid al-Adha. Credit: NASA, Image above: Ozone is formed when an oxygen molecule is split by an ultraviolet ray and then combined with an oxygen atom. These ultraviolet rays can harm both plant and animal life. Credit: NASA, Image above: The atmospheric profile shows the different height of each of the atmospheric layers. Even with the ozone filter, some ultraviolet radiation reaches the Earth. Scientists believe that the formation of the ozone layer played an important role in the development of life on Earth by screening out lethal levels of UVB radiation (ultraviolet radiation with wavelengths between 315 and 280 nanometres) and thus facilitating the migration of life-forms from the oceans to land. In addition to chlorofluorocarbons, pesticides containing methyl bromide, halons used in fire extinguishers and methyl chloroform found in industry solvents are known to destroy ozone. Ozone layer is very important for the earth because it provide a protection against UV (Ultraviolet) radiation of the sun so it is described as the shield of the earth. Ozone: What is it, and why do we care about it? Will 5G Impact Our Cell Phone Plans (or Our Health?! Like a sponge, the ozone layer absorbs bits of radiation hitting Earth from the sun. Your browser or your browser's settings are not supported. Plants cannot live and grow in heavy ultraviolet radiation, nor can the plankton that serve as food for most of … In the 1980s, inquiry into the cause of the depletion of the ozone layer led to investigation of chlorofluorocarbons, which are chemicals used in refrigerants, insulating foams and solvents. Most ozone resides in the stratosphere (a layer of the atmosphere between 10 and 40 km above us), where it acts as a shield to protect Earth's surface from the sun's harmful ultraviolet radiation. After observation of a depletion of the ozone layer from the addition of chlorofluorocarbons and other man-made chemicals, the Montreal Protocol was enacted on Jan. 1, 1989 as an attempt to eradicate these chemicals from the atmosphere. Is the Coronavirus Crisis Increasing America's Drug Overdoses? NASA - National Aeronautics and Space Administration. These ultraviolet rays can harm both plant and animal life. The ozone layer is important because it filters harmful ultraviolet radiation as it travels from the sun to the surface of the Earth. Credit: TWR, Follow this link to skip to the main content. Ozone layer is an outer layer in the atmosphere that is responsible in filtering out the harmful ultraviolet rays coming from the sun. Reduced ozone levels as a result of ozone depletionozone depletionA chemical destruction of the stratospheric ozone layer beyond natural reactions. Ozone is only a trace gas in the atmosphere—only about 3 molecule s for every 10 million molecules of air. ), The Secret Science of Solving Crossword Puzzles, Racist Phrases to Remove From Your Mental Lexicon. To get the best experience possible, please download a compatible browser. xmlns:xsl=''">. Credit: NASA, Image above: TOMS was used to observe how the low ozone layers have increased over a ten year period. Image to right: The low ozone levels in this image are transparent (blue) while high levels are opaque (white). Once chlorofluorocarbons are released into the atmosphere, winds buffet them upward where they interact with ozone, destroying the ozone molecules. Without the layer of ozone in the atmosphere, it would be very difficult for anything to survive on the surface. Even though we need some of the sun's radiation to … With a weakening of this shield, we would be more susceptible to … Stratospheric ozone is constantly being created and destroyed through natural cycles. Ozone is found in the stratosphere, a layer of air that encircles the globe approximately 6 to 30 miles above its surface. Ozone Is Beneficial. It is mainly lie in the lower portion of the stratosphere from about 20 to 30 kilometers above the earth. The ozone layer is important because it filters harmful ultraviolet radiation as it travels from the sun to the surface of the Earth. When ultraviolet radiation strikes this layer of air, it interacts with the ozone and is chemically decomposed. If you know your browser is up to date, you should check to ensure that ozone layer is a spherical layer surrounding the earth.


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