Nearly 90% of earths ozone is in the stratosphere and referred to as the ozone layer. The ozone layer was discovered in 19 by the french physicists. Depletion of stratospheric ozone o3, as commonly known as the hole in the ozone layer, is an issue of international concern. Find out what caused the ozone hole, and how the 1989 montreal protocol sought to put an end to ozone depletion. Ozone layer depletion, its causes and its effects scribd. The layer of ozone gas is what which protects us from the harmful ultraviolet radiations of the sun. The ozone layer thus plays an important role by preventing the harmful uv radiations from penetrating into the earths lower atmosphere the troposphere. This quick video discusses the role of the ozone layer and how cfcs can cause ozone depletion. Ozone layer depletion is the reduction of the amount of ozone in the stratosphere, caused by substances formed from breakdown of ozone depleting substances. A seminar on the depletion of the ozone layer, presented by ozoagu peter cj.
Ozone layer depletion, its causes and its effects free download as powerpoint presentation. Ozone absorbs a band of ultraviolet radiation called uvb. There have been several concerns about ozone depletion. Stratospheric ozone depletion ppt download slideplayer. Ppt ozone layer depletion authorstream presentation. Causes, effects and solutions of ozone layer depletion. Ozone depletion, gradual thinning of earth s ozone layer in the upper atmosphere caused by the release of chemical compounds containing gaseous chlorine or bromine from industry and other human activities. Unlike oxygen o2, ozone has a strong scent and is blue in color. This power point presentation is mainly focused on todays most challenging issue as depletion of ozone layer with major factors affecting it. Ozone depletion facts and information national geographic. Scientists have found a huge gape in the ozone layer over antarctica. Ozone depletion displaying top 8 worksheets found for this concept some of the worksheets for this concept are activity pack for key stages 2 3, tthe ozone hole and global he ozone hole and global global, national aeronautics and the ozone hole space administratio n, the good the bad and the ugly of ozone, causes of ozone layer depletion and its effects on human, ozone.
Update on ozonedepleting substances odss and other gases of. By 1985, the globe had already seen advancements in the scientific understanding of ozone depletion and its impacts on human health and the environment. Management of ozonedepleting substances reported to the toxics release inventory katherine sleasman u. Ozone layer depletion has been one of the major concern for the scientists of the world. As a result of its chemical composition, ozone is regarded as a special type of oxygen as it contains three oxygen molecules o3 as opposed to the usual two oxygen molecules o2. Ozone layer depletion is one of the most serious problems faced by our planet earth. Assessments of ozone depletion as an author, coauthor. 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.
Ozone layer depletion powerpoint template sketchbubble. It was then that the vienna convention for the protection of the ozone layer was created in response. The uploader spent hisher valuable time to create this depletion of ozone layer powerpoint presentation slides, to share hisher useful content with the world. 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. It covers the entire planet and protects life on earth by absorbing harmful ultravioletb uvb radiation from the sun. The ozone layer refers to a region of earths stratosphere that absorbs most of the suns uv radiation. Ppt ozone depletion powerpoint presentation, free download. Give your memorable depletion of ozone layer presentation and build your crawd. Evs global warming, ozone depletion ppt free download as powerpoint presentation.
The causes, mechanism and bioeffects of ozone layer depletion on humans were addressed. Pdf atmospheric ozone layer depletion and its impact. Ozone depletion free download as powerpoint presentation. The troposphere has a thick layer of carbon dioxide and this layer of carbon dioxide serves. The ozone hole grows and decreases every year with. The ozone layer is mainly found in the lower portion of the stratosphere. The ozone depletion resulted in secondary production of an ozone layer near the ground terrestrial ozone layer, which is responsible for adverse effects on plants, humans and environment with. Total bromine from halons has decreased from a peak of 8.
Most ozone is found in the stratosphere upper part of the atmosphere, more than 10 to 16 kms from the surface of the earth. 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. This is the cause for the nearly 80% of the ozone depletion. It is also one of the prime reasons which are leading to global warming. Under the original montreal protocol agreement 1987, developed countries were required to begin phasing out cfcs in 1993 and achieve a 20% reduction relative to 1986 consumption levels by 1994 and a 50% reduction by 1998. 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 helps to protect life from harmful ultraviolet radiation. In addition to the emergence of stratospheric ozone depletion as an international political issue, three other factors are. Ozone depletion ozone depletion chlorofluorocarbon. View and free download depletion of ozone layer powerpoint ppt presentation slides. The ozone layer is a deep blanket in the stratosphere made up of comparatively high concentration of the ozone. However, mounting evidence suggests that ozone layer is diminishing rapidly. 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. The proportion of skin cancer cases in chile affecting people under the age of 50 has increased from 12% to 20% in the last 2 years, according to a report by the charity corporacion nacional del cancer conac. Ozone layer depletion cause, effects, and solutions. Pdf causes of ozone layer depletion and its effects on.
Ppt ozone depletion powerpoint presentation free to. This powerpoint presentation will guide the students through a description of the earths ozone layer and the concept behind ozone depletion. Why the hole in the atmospheric ozone layer above us. Ozone in this area is bad because it dirties the air and helps make smog, which is unhealthful to breathe. Ozone depleting substances are the substances such as chlorofluorocarbons, halons, carbon tetrachloride, hydrofluorocarbons, etc. In addition to the emergence of stratospheric ozone depletion as an international political. This uv rays will cause detrimental effects on living organisms as explained above. The original montreal protocol, signed in 1987, was the first step in international efforts to protect stratospheric ozone. This timeline highlights the average area of the ozone hole between september 7th and october th as observed by nasa spacedbased instruments see colored bars and scale. Learn what cfcs are, how they have contributed to the ozone hole, and how the 1989 montreal. Depletion of ozone layer powerpoint ppt presentation slides. Find powerpoint presentations and slides using the power of, find free presentations research about depletion of ozone layer ppt. Apr 18, 2019 the ozone layer helps to protect life from harmful ultraviolet radiation.
Feb 12, 2018 far above earths surface, the ozone layer helps to protect life from harmful ultraviolet radiation. Ozone layer and ozone layer depletion powerpoint free. Presentation on ozone depletion linkedin slideshare. 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. Download the introductory presentation ppt, 410 kb during the first kinetics lecture, we traced the efforts of atmospheric chemists to explain the depletion of ozone in the upper atmosphere. Ozone depletion is the process of destruction of the ozone layer which can cause adverse effects on the living forms by many pollutants releases out from the vehicles, industries etc. Ozone layer depletion causes, effects and solutions 7. 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 properties of ozone layer were explored by the british. Ppt ozone layer depletion powerpoint presentation free. Ppt ozone layer depletion powerpoint presentation free to. Ozone depletion displaying top 8 worksheets found for this concept some of the worksheets for this concept are activity pack for key stages 2 3, tthe ozone hole and global he ozone hole and global global, national aeronautics and the ozone hole space administratio n, the good the bad and the ugly of ozone, causes of ozone layer depletion and its effects on.
Causes of ozone layer depletion and its effects on human. The ozone layer was discovered in 19 by the french physicists charles fabry and henri buisson. It contains high concentrations of ozone o3 relative to other parts of the atmosphere. The greenhouse is covered with a kind of plastic walls which permits all radiations from the sun. Following is the list of some of the main ozone depleting substances and the sources from where they are released. Jul 15, 2019 ozone layer depletion has been one of the major concern for the scientists of the world. Ozone layer of the earths atmosphere protects us from the harmful solar radiation. Thus ozone depletion, the so called ozone hole formed. International treaties and cooperation about the protection. Ozone is a colourless gas which is found in the stratosphere of our upper atmosphere. Ozone layer depletion is one of the major environmental issues which is getting thinner day by day as a result of increasing pollution.
The problems and causes associated with ozone depletion arise from human activities. Ozone layer depletion causes affecting factors ozone hole etc. Our powerpoint presentation about ozone depletion, its effects and its causes. U2 spy planes gathered much of the initial data that linked clo in the. Cfcs, hcfcs, halons, methyl bromide, carbon tetrachloride, and methyl chloroform. This is apparently found in the lowest region of the stratosphere. Evs global warming, ozone depletion ppt ozone depletion. This free powerpoint template helps you to grasp the attention of your viewers towards the importance, effects and causes of ozone layer depletion. However, the fact that there also exists another layer strong enough to. 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. The increase of ultraviolet light due to depletion of the ozone layer will not only have adverse health effects. Far above earths surface, the ozone layer helps to protect life from harmful ultraviolet radiation. If interested, you can purchase this powerpoint from my online store. Find out what caused the ozone hole, and how the 1989 montreal.
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. It contains some videos and gif at thte end from an external source. Management of ozonedepleting substances reported to the. Free download powerpoint presentation slides from on different presentation topics. However, the fact that there also exists another layer strong enough to stop the former one is comforting. A free powerpoint ppt presentation displayed as a flash slide show on id. Jul 02, 2015 this quick video discusses the role of the ozone layer and how cfcs can cause ozone depletion. The report also suggests that by the age of 18, many adolescents have already been exposed to 80% of a safe lifetime dose of ultraviolet uv radiation. View,download and upload powerpoint presentations for free. Our ozone layer depletion ppt template is excellent for giving an indepth presentation about such a topic. When did we realize ozone depletion was an issue, and how did we fix it. 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 ozonedepleting substances ods. 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.
All of the slides feature hd vectorbased graphics, which allows you to resize images and icons without decreasing the high quality. Cfcs, hcfcs, halons, methyl bromide, carbon tetrachloride, and methyl. Scribd is the worlds largest social reading and publishing site. View and download powerpoint presentations on depletion of ozone layer ppt. A greenhouse or a farm house is a very big enclosure for the plants in a farm to save them from an extremely cold temperature in winter. The thinning is most pronounced in the polar regions, especially over antarctica. Twenty questions and answers about the ozone layer. The natural distribution of ozone around the earth is. Ozone depletion, gradual thinning of earths ozone layer caused by the release of chemical compounds containing gaseous chlorine or.
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