Find highquality ozone depletion stock photos and editorial news pictures from getty images. The ozone layer protects the earth from the suns harmful uv rays. The atmosphere is mostly transparent to the visible except for scatter. Ozone layer of the earths atmosphere protects us from the harmful solar radiation. Ozone layer depletion definition of ozone layer depletion.
Cfcs get banned in 1974 scientists sherry rowland and mario molina discovered the link between the depletion of the ozone layer and cfcs. This can only be done by reducing the use of compounds which react in the atmosphere to harm the ozone layer. In the late 1990s, average ozone depletion in the summer over canada was between 3% and 7%. Once they get there they destroy ozone molecules and cause the ozone layer to become depleted or thinner. Petes powerpoint station is your destination for free powerpoint presentations for kids and teachers about the ozone layer.
It contains high concentrations of ozone o3 relative to other parts of the atmosphere. This, in turn, will lead to the breakdown of ozone. The depletion has lessened since then and now is about 3% averaged over the globe. The ozone depletion potential odp of a chemical compound is the relative amount of degradation to the ozone layer it can cause, with trichlorofluoromethane r11 or cfc11 being fixed at an odp of 1. Ppt a seminar on the depletion of the ozone layer, presented by. Downloads scientific assessment of ozone depletion 2018. Policy responses to ozone depletion mario molina and sherwood rowland showed in 1974 that cfc gases destroy ozone coordinating committee on ozone layer ccol established by unep in the 1970s vienna convention for the protection of the ozone layer held in 1985 montreal protocol to ban. This free powerpoint template helps you to grasp the attention of your viewers towards the importance, effects and causes of ozone layer depletion. Ozone depletion, gradual thinning of earths ozone layer in the upper atmosphere caused by the release of chemical compounds containing gaseous chlorine or bromine from industry and other human activities. Mar 21, 2020 ozone depletion, gradual thinning of earths ozone layer in the upper atmosphere caused by the release of chemical compounds containing gaseous chlorine or bromine from industry and other human activities. By merging more than a decade of atmospheric data from european satellites.
The ozone layer is mainly found in the lower portion of the stratosphere. In addition, all figures are available for download, in three formats. Ozone layer depletion penn state college of earth and. Policy responses to ozone depletion mario molina and sherwood rowland showed in 1974 that cfc gases destroy ozone coordinating committee on ozone layer ccol established by unep in the 1970s vienna convention for the protection of the ozone layer held in 1985 montreal protocol to ban substances that. The properties of ozone layer were explored by the british. Ozone layer the ozone layer is basically naturally occurring gas in the region of stratosphere where ozone particles are accumulated 2. A free powerpoint ppt presentation displayed as a flash slide show on id. Ozone layer depletion is the gradual thinning of the earths ozone layer in the upper atmosphere caused due tho release of chemical compounds containing gaseous bromine or chlorine from industries or other human activities. The depletion of the ozone layer 1593 words 7 pages. This free powerpoint template helps you to grasp the attention of your viewers towards the importance, effects and. The upper layer of the atmosphere surrounded by ozone 15 to 30 kms is known as ozonosphere. Ozone is a molecule made of three atoms of oxygen instead of the usual two atoms.
Find answers to frequently asked questions about the ozone layer, ozone depletion, and the effects of ozone depletion on health and the environment. Hence, cfcs are transporting agents that are responsible for damaging the ozone layer. Download premium images you cant get anywhere else. The lowest layer, the troposphere tropospherethe region of the atmosphere closest to the earth. Ozone layer depletion leveling off, satellite data show. There, it will absorb almost all ultraviolet light which is harmful to many organisms. Ozone depletion over india with so much worry about the rapid ozone depletion taking place in various parts of the earth, indian scientists are closely monitoring the ozone layer over india for possible depletion trends. Ozone layer depletion article about ozone layer depletion. This helps you give your presentation on depletion of ozone layer in a conference, a school lecture, a business proposal, in a webinar and business and professional. Ozone and environment ozone o3 a gas composed of three atoms of oxygen bluish gas that is harmful to breathe nearly 90% of the earths ozone is in the stratosphere and is referred to as the ozone layer ozone absorbs a band of ultraviolet radiation called uvb ozone depleting substances ods. The ozone layer helps to protect life from harmful ultraviolet radiation. Jun 04, 2016 misconceptions about the ozone layer depletion 16 common mistake fact global warming is caused by the ozone hole which was created by chemicals like cfc etc. Affordable and search from millions of royalty free images, photos and vectors. Most ozone is found in the stratosphere upper part of the atmosphere, more than 10 to 16 kms from the surface of the earth.
Chemistry climate change effects ecosystem global warming ozone ozone layer. Is there a difference in ozone coverage between different hemispheres. Learn what cfcs are, how they have contributed to the ozone. The ozone depleting effect of refrigerants is important, because the ozone layer filters out ultraviolet uv radiation, which might otherwise reach the surface of the earth. Depletion of the global ozone layer increased gradually in the 1980s and reached a maximum of about 5% in the early 1990s. Ozone can be bad every spring a hole in the layer of harmless ozone as big as the usa opens over antarctica, a smaller one develops over the arctic at the north pole this is the first signs that the ozone layer is.
The condition of the ozone layer is a heated topic in such conversations. Ozone depletion consists of two related events observed since the late 1970s. Ozone depletion ozone depletion chlorofluorocarbon. Easy to download and edit, the ozone layer depletion powerpoint template has hd graphics. This helps you give your presentation on depletion of ozone layer in a conference, a school lecture, a business proposal, in a webinar and business and professional representations. The causes, mechanism and bioeffects of ozone layer depletion on humans were addressed. Scribd is the worlds largest social reading and publishing site.
The term ozone depletion can refer to a number of distinct, but related phenomena. Ozone layer depletion causes, effects and solutions 7. Cfcs, hcfcs, halons, methyl bromide, carbon tetrachloride, and methyl chloroform. We have seen the various effects of ozone layer depletion and can conclude by saying that it is very important for our survival. Ozone layer depletion has been one of the major concern for the scientists of the world. Why the hole in the atmospheric ozone layer above us. Pdf atmospheric ozone layer depletion and its impact. Ozone layer depletion cause, effects, and solutions biology. Presentation on ozone depletion ozone depletion medicine. Sep 22, 2009 ozone layer depletion leveling off, satellite data show date. If interested, you can purchase this powerpoint from my online store. Ozone layer is a thin, fragileshield that contains relatively highconcentrations of ozone.
The level from which it extends outward varies with latitude. Basic ozone layer science ozone layer protection us epa. Ozone depletion stock pictures, royaltyfree photos. Ozone depletion simple english wikipedia, the free encyclopedia. Find powerpoint presentations and slides using the power of, find free presentations research about depletion of ozone layer ppt. Unlike oxygen o2, ozone has a strong scent and is blue in color. Significant depletion of the arctic ozone layer also occurs in.
Find highquality ozone layer stock photos and editorial news pictures from getty images. The danger and prevention of ozone layer depletion humans cause ozone depletion with air conditioners and refrigerators, of all things. Now i am going to tell you what are the adverse effects caused by the depletion of the ozone layer ozone which accounts for only 3 parts in ten millions of earths atmosphere, plays several crucial roles in the radiation balance of the planet. Now, you can easily use our professionally predesigned ozone layer depletion powerpoint template to cover it all and serve information to your intended audience. Ozone layer depletion, its causes and its effects ozone.
The thinning is most pronounced in the polar regions, especially over antarctica. Near the ground, ozone forming as a result of chemical reactions involving traffic pollution and sunlight may cause a number of respiratory problems, particularly for young children. Ozone layer is also naturally broken down but there is a balance between its formation and natural depletion. Ozone layer depletion, its causes and its effects free download as powerpoint presentation.
Low temperatures, increase in the level of chlorine and bromine gases in the upper stratosphere are some of the reasons that leads to ozone layer depletion. However, mounting evidence suggests that ozone layer is diminishing rapidly. Ozone depletion in canada is usually greatest in the late winter and early spring. Hole in the ozone layer has been caused by chemicals released by humans. Free powerpoint presentations about the ozone layer for. Abnormal weather patterns in the upper atmosphere over antarctica dramatically limited ozone depletion in september and october, resulting in the smallest ozone hole observed since 1982, nasa and noaa scientists reported today. The ozone layer is a belt of the naturallyoccuring gas ozone that sits. Ppt ozone layer depletion powerpoint presentation free. However, the fact that there also exists another layer strong enough to stop the former one is comforting.
As a result the total amount of ozone remains constant. It shields the entire earth frommuch of the harmful uv radiationthat comes from the sun 3. The natural distribution of ozone around the earth is. The invisible shield is the ozone layer located in the stratosphere, which starts about 10 miles above the surface and contains about 90 percent of all the ozone molecules in the atmosphere. Temperature of the stratosphere is a key factor, as is sunlight, in the depletion of ozone.
Ozone layer depletion powerpoint template sketchbubble. Causes of ozone layer depletion and its effects on human. Ozone depletion facts and information national geographic. Ppt ozone layer depletion authorstream presentation. Project report on ozone depletion environmental pollution. Powerpoint is the worlds most popular presentation software which can let you create professional depletion of ozone layer powerpoint presentation easily and in no time.
The ozone layer protects living things from harmful ultraviolet rays from the sun. Dear students, the team of jagran josh is presenting you a set of 10 questions based on ozone layer depletion. Some ozone also exists in the troposphere, when industrial pollutants react in the presence of sunlight. Ozone and environment ozone o3 a gas composed of three atoms of oxygen bluish gas that is harmful to breathe nearly 90% of the earth sponsored links displaying powerpoint presentation on ozone layer depletion available to view or download. Measures should be taken to protect our earth from the harmful ultraviolet rays. The first report of depletion in o 3 layer came out in the 1980s by an atmospheric scientist in antarctica. Ozone layer is a protective stratospheric layer, also known as ozone umbrella. Far above earths surface, the ozone layer helps to protect life from harmful ultraviolet radiation. Concern about a depleting ozone layer dates back to the 1970s.
Apr 18, 2019 the ozone layer helps to protect life from harmful ultraviolet radiation. The danger and prevention of ozone layer depletion. It contains some videos and gif at thte end from an external source. Presentation on ozone depletion free download as powerpoint presentation.
Ozone layer depletion cause, effects, and solutions. Timeline of stratospheric ozone depletion and observations. Hey guys the ozone day is celebrated on 16th september. Both are essential for life but air also protects all of us and it is therefore understandable that the response to the depletion of the ozone layer became international. Pdf causes of ozone layer depletion and its effects on. Ozone depletion eric lin, cody lu natalie qin, silvia shi the ozone layer is essential to organisms because it protects them from harmful effects of the. Formation and depletion effect of the montreal protocol on stratospheric cl sunlight incident on earth is very roughly. The earths atmosphere is composed of several layers. Total bromine from halons has decreased from a peak of 8. Find out what caused the ozone hole, and how the 1989 montreal protocol sought to put an end to ozone depletion. Ozone and the ozone hole background catalyst to breaking up the ozone layer. The main things that lead to destruction of the ozone gas in the ozone layer. This radiation could have seriously damaging effects on germinating crops and on the photoplankton of the oceans. If so, share your ppt presentation slides online with.
Ppt ozone depletion powerpoint presentation free to. You can find maps of the ozone layer and compare different regions of the globe for ozone coverage. Ozone is a gas that is present in the ozone layer in the stratosphere of the earth. Download affordable depletion of ozone layer editable powerpoint template now. Depletion of stratospheric ozone o3, as commonly known as the hole in the ozone layer, is an issue of international concern. Let us see some of the important causes and effects of ozone layer depletion. Frequently asked questions about the ozone layer ozone. Our powerpoint presentation about ozone depletion, its effects and its causes. The ozone layer over southern canada has thinned by an average of about 7% since the 1980s. Troposphere stratosphere troposphere it is found at the earths surface. Be effective with your powerpoint presentations by using our depletion of ozone layer powerpoint presentation template. Ozone layer depletion is the thinning of the ozone layer present in the atmosphere. The ozone layer is important for blocking most of the harmful radiation that comes from the sun.
It protects us from harmful uv radiations emitted from. Scientists have found a huge gape in the ozone layer over antarctica. The ozone layer was discovered in 19 by the french physicists charles fabry and henri buisson. The troposphere extends from the surface up to about 10 km in altitude, although this height varies with latitude. View and download powerpoint presentations on depletion of ozone layer ppt. Jul 02, 2015 this quick video discusses the role of the ozone layer and how cfcs can cause ozone depletion. Jun 07, 2017 ozone layer and its depletion animation mcgrawhill animations. These processes are all intimately connected through chemical, radiative, and dynamical feedbacks.