Total bromine from halons has decreased from a peak of 8. The layer of ozone gas is what which protects us from the harmful ultraviolet radiations of the sun. The increase in the levels of uv rays lead to high rate of skin cancer and eye related problems. Ozone layer and ozone layer depletion powerpoint free. Ozone is a colourless gas which is found in the stratosphere of our upper atmosphere. Fire extinguishers contain halons and methyl bromide in the form of pesticides can also be also a cause for the depletion.
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. Project report on ozone depletion environmental pollution. Evs global warming, ozone depletion ppt ozone depletion. Ppt ozone layer depletion authorstream presentation. Do changes in the sun and volcanic eruptions affect the ozone layer. The level from which it extends outward varies with latitude. It shields the entire earth from much of the harmful uv radiation that. Causes, effects and solutions of ozone layer depletion. The ozone in the stratosphere is continually being made and broken by ultraviolet light in the ozoneoxygen cycle. 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.
Scribd is the worlds largest social reading and publishing site. The properties of ozone layer were explored by the british. Ppt ozone layer depletion powerpoint presentation free. The ozone layer, the ozone hole several good ozone, bad ozone. Ozone layer depletion has been one of the major concern for the scientists of the world. An ozone hole would approximate to an area where the ozone concentration drops to an average of around 100. Ozone depleting substances are the substances such as chlorofluorocarbons, halons, carbon tetrachloride, hydrofluorocarbons, etc. The ozone layer was discovered in 19 by the french physicists charles fabry and henri buisson. 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. Ozone layer the ozone layer is basically naturally occurring gas in the region of stratosphere where ozone particles are accumulated 2. View and download powerpoint presentations on depletion of ozone layer ppt. The ozone hole grows and decreases every year with.
Ozone is formed by photochemical reaction, followed by three body reaction. Ozone depletion chapter 2 ozone depletion chapter 2 ozone layer a layer in the stratosphere that is made of ozone o3 absorbs ultraviolet light from the sun. A simple example is ozone depletion in the upper stratosphere leading to lower. More recently, fears have emerged about significant ozone depletion over the arctic, closer to the more populous regions of the northern hemisphere. The antarctic ozone hole is recovering, while continuing to occur every. Ozone layer depletion is one of the most serious problems faced by our planet earth. Its detrimental to our world, and if it is fixed then it will be easier for countries, people, and wildlife globally to thrive. The ozone layer refers to a region of earths stratosphere that absorbs most of the suns uv radiation. The atmosphere, environmental science, pollution, global warming. This free powerpoint template helps you to grasp the attention of your viewers towards the importance, effects and causes of ozone layer depletion. 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.
Pdf atmospheric ozone layer depletion and its impact. Depletion to ozone layer depletion does not affect a region or a country. View and free download depletion of ozone layer powerpoint ppt presentation slides. Causes of ozone layer depletion and its effects on human. 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. With less ozone in the atmosphere, more ultraviolet radiation strikes earth, causing more skin cancer, eye damage, and possible harm to crops. Ozone depletion and climate change are linked in a number of ways, but. But good news is that most of the harmful uv radiation is absorbed by a layer of ozone gas 20 50 km above the earth. When highenergy ultraviolet rays uvc strike an oxygen. Ppt ozone layer depletion powerpoint presentation, free. Download premium images you cant get anywhere else. It is also one of the prime reasons which are leading to global warming. It contains high concentrations of ozone o3 relative to other parts of the atmosphere.
However, mounting evidence suggests that ozone layer is diminishing rapidly. The thickness of the polar stratospheric ozone layer depends. Pdf causes of ozone layer depletion and its effects on. It shields the entire earth frommuch of the harmful uv radiationthat comes from the sun 3. Ppt ozone depletion powerpoint presentation free to download id.
Ozone is present high in our atmosphere as a gas, and molecules of ozone absorb ultraviolet uv light emitted by our sun. Ozone layer depletion causes, effects and solutions 7. Thus, ozone layer depletion has become a major concern among the environmentalists. The ozone layer is a layer of the upper atmosphere that blocks out harmful uv rays. Uv gets absorbed in the stratosphere by molecular oxygen, which splits into 2.
The latest ozone layer depletion news is included at the foot of the page. Chances of fatalities from cancer, food growth, or animal extinctions, will be lowered. The adobe flash plugin is needed to view this content. The third body m absorbs the excess energy liberated by the above reaction and there by stabilise the o 3 ozone molecule.
Far above earths surface, the ozone layer helps to protect life from harmful ultraviolet radiation. In response to this and additional fears about more widespread global ozone depletion, the montreal protocol on substances that deplete the ozone layer was implemented in 1987. Ozone layer is also naturally broken down but there is a balance between its formation and natural depletion. Ozone layer depletion ozone depletion is the seasonal loss of a large swath of our stratospheric ozone above antartica, as well as the general degradation of this protective layer around the globe. Find powerpoint presentations and slides using the power of, find free presentations research about depletion of ozone layer ppt. A free powerpoint ppt presentation displayed as a flash slide show on id. As a result the total amount of ozone remains constant. Easy to download and edit, the ozone layer depletion powerpoint template has hd graphics. The ozone layer is a belt of the naturallyoccuring gas ozone that sits at an altitude of between 15 and 30 kilometers above the earth. Mathew mokhtarzadeh, yusei koizumi, alex kim, justin kim. Ozone depletion is an issue that is vital to be fixed. Ozone layer depletion powerpoint template sketchbubble. Ozone layer depletion, its causes and its effects free download as powerpoint presentation. Give your memorable depletion of ozone layer presentation and build your crawd.
The thinning is most pronounced in the polar regions, especially over antarctica. Ozone absorbs a band of ultraviolet radiation called uvb. Between 20 and 50 kilometers above the earths surface absorbs most of the harmful uv light from sunlight before it reaches the earths surface ozone depletion. Ozone layer depletion cause, effects, and solutions. Following is the list of some of the main ozone depleting substances and the sources from where they are released. The causes, mechanism and bioeffects of ozone layer depletion on humans were addressed. Our ozone layer depletion ppt template is excellent for giving an indepth presentation about such a topic. Why the hole in the atmospheric ozone layer above us.
Ozone layer is a thin, fragileshield that contains relatively highconcentrations of ozone. Unlike oxygen o2, ozone has a strong scent and is blue in color. On this page you can read or download mcq on environmental pollution depletion ppt in pdf format. 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 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. Presentation on ozone depletion linkedin slideshare. Project ozone layer depletion pdf the stratospheric ozone layer forms a thin shield in the upper atmosphere, protecting life on earth from. Find highquality ozone layer stock photos and editorial news pictures from getty images. In fact whole world is vulnerable to its after affects. The chlorofluorocarbon and the halons are potent ozone. Download affordable depletion of ozone layer editable powerpoint template now. Nearly 90% of earths ozone is in the stratosphere and referred to as the ozone layer. The major culprit in causing ozone depletion is cfc chlorofluorocarbon a highly stable gaseous chemical that we call it as freon which is used in the refrigerators and other.
How large is the depletion of the global ozone layer. The ozone layer is mainly found in the lower portion of the stratosphere. There are natural processes that create and destroy ozone in the stratosphere. A close look at the evolution at the life on earth reveals that initially the. This ozone layer filters out the harmful uv rays from entering in to the earths atmosphere thus it protects the living organisms. It is revealed that introduction of chloroflourocarbons cfcs in the environment is the most rated cause.
Ozone layer depletion penn state college of earth and. Ozone layer depletion, its causes and its effects scribd. Ozone layer of the earths atmosphere protects us from the harmful solar radiation. 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. Ozone layer depletion is one of the major environmental issues which is getting thinner day by day as a. Cfcs, hcfcs, halons, methyl bromide, carbon tetrachloride, and methyl chloroform. What is ozone ozone is a molecule made of 3 atoms of oxygen ozone is a bluish gas ozone helps absorbs harmful uv radiation from the sun. Ppt ozone depletion powerpoint presentation free to. All of the slides feature hd vectorbased graphics, which allows you to resize images and icons without decreasing the high quality. This powerpoint presentation will guide the students through a description of the earths ozone layer and the concept behind ozone depletion. Be effective with your powerpoint presentations by using our depletion of ozone layer powerpoint presentation template. 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.
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