Jan 20, 2010 this yearly occurrence is called the ozone hole. Apr 18, 2019 the ozone layer helps to protect life from harmful ultraviolet radiation. Reducing the use of ozone depletion substances ods. There, it will absorb almost all ultraviolet light which is harmful to many organisms. Ozone layer depletion causes and effects of ozone layer. Ozone layer protection european commission european union. Global warming and ozone layer depletion are two different problems see the sidebar misconceptions about global atmospheric change on page 95. Causes of ozone layer depletion, effects, prevention. In a study conducted to determine secondary school students knowledge of the relationship between vehicle traffic and environmental problems, it was found that. The chlorofluorocarbon and the halons are potent ozone depletors. Various anthropogenic activ i ties such as emissions of cfcs, hcfcs and other organohalogens lead to the depletion of ozone. Mar 28, 2020 ozone depletion biology projects, biology science fair project ideas, biology topics for cbse school,icse biology experiments for kids and also for middle school, elementary school for class 5th grade,6th,7th,8th,9th 10th,11th, 12th grade and high school, msc and college students. These chemicals are found in cleaning agents, aerosols, insulating foam, and refrigerants. This video contains a tutorial on why ozone layer depletion takes place.
The ozone layer protects the surface of the earth and its phenomena from stray rays from the sun. May 03, 2017 ozone layer is a thin blanketlike layer that spreads over the atmosphere of the earth. It is an essential factor for many global, biological and environmental phenomena. Ozone layer depletion effects on the environment effects on nonhuman animals a november 2010 report by scientists at the institute of zoology in london found that whales off the coast of california have shown a sharp rise in sun damage, and these scientists fear that the thinning ozone layer is. 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. Ozone is a molecule consisting of three oxygen atoms o3 and has the property of being highly toxic because of its radioactivity.
Ozone layer depletion cause, effects, and solutions. One of the main reasons for the widespread concern about depletion of the ozone layer is the anticipated increase in. The thinning is most pronounced in the polar regions, especially over antarctica. 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 increased number of.
This website addresses stratospheric ozone issues, including the science of ozone depletion, epas regulatory approach to protecting the ozone layer, epaapproved alternatives to ozone depleting substances, and sun safety. Uv radiations are disturbing developmental and physiological processes which is decreasing the productivity of crops. Cfcs get banned in 1974 scientists sherry rowland and mario molina discovered the link between the depletion of the ozone layer and cfcs. Unfortunately, cfcs can eventually find their way into the earths atmosphere and the ozone layer. The main things that lead to destruction of the ozone gas in the ozone layer. The ozone layer acts as a natural filter, absorbing most of the suns burning ultraviolet uv rays. Depletion of ozone layer causes uv rays to pass though. The problems and causes associated with ozone depletion arise from human activities. In the southern hemisphere, shifts in the latitudinal position of. Ozone depletion and the environment there is overwhelming scientific evidence that manmade chemicals are destroying the ozone layer nobel prizes have already been awarded for the research. By absorbing uv radiation the ozone layer heats up the atmosphere. There are plenty of causes and effects of ozone depletion, cfc emission being one.
We use your linkedin profile and activity data to personalize ads and to show you more relevant ads. Ozone layer depletion is one of the major environmental issues which is getting thinner day by day as a. The main effect of ozone depletion is an increase in uvb rays reaching the earths surface. 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. The envelope of air or different types of gases surrounding the earth is known as atmosphere. What is important to keep in mind is the fact that prevention of ozone layer depletion is so very important because it directly affects the well being of the people. It is revealed that introduction of chloroflourocarbons cfcs in the environment is the most rated cause of said depiction. Issues and concerns about the ozone layer depletion introduction the ozone layer protects the earth from the ultraviolet rays sent down by the sun.
Ozone layer is a deep layer in earths atmosphere called stratosphere that contain ozone which is a naturally. There are many situations where human activities have. Ozone layer depletion 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 stratospheric ozone layer forms a thin shield in the upper atmosphere, protecting life on earth from. Find out what caused the ozone hole, and how the 1989 montreal protocol sought to put an end to ozone depletion.
Questions and answers about the environmental effects of the. When volcanoes erupt, they produce massive clouds of ashes into the troposphere, and then they drift upward into the stratosphere the upper atmosphere layer where ozone gas protects humans from uv radiation. The ozone hole and global warming union of concerned. Project report on ozone depletion environmental pollution. Scribd is the worlds largest social reading and publishing site. If the ozone layer is depleted by human action, the effects on the planet could be catastrophic. Natural causes of ozone depletion ozone depletion describes two distinct, but related observations. Essay on ozone depletion and the environment 1505 words. Man has tried hard to deploy protective measures towards controlling the ozone layer from depletion,but this is so. But the one and the most important reason for ozone layer depletion is the production and emission of chlorofluorocarbons cfcs.
About depletion of the ozone layer is the anticipated increase in the amounts of. What are the causes and effects of ozone depletion. Ozone layer depletion can have some serious consequences on effects of human health, plants, marine ecosystems, biogeochemical cycles and earths environment. The term ozone depletion can refer to a number of distinct, but related phenomena. Ozone is a gas that is present in the ozone layer in the stratosphere of the earth. However, various factors have led to the depletion and damage of this protective layer. It has a flash animated clipping showing formation of ozone.
It is revealed that introduction of chlorof lourocarbons cfcs in the environment is the most rated cause of said depiction. Ozone depletion facts and information national geographic. Ozone layer depletion, its causes, effects and control measures. Ozone layer depletion causes, effects and solutions 7.
Highly reactive species like hydrogen peroxide is produced which has bad effects on human health. This site is like a library, you could find million book here by using search box in the header. There have been several concerns about ozone depletion. Certain industrial processes and consumer products result in the emission of halogen source gases to the atmosphere. Ozone layer is a layer in the earths atmosphere which contains relatively high concentration of ozone. Ozone is an irritating, corrosive, colorless gas with a smell something like burning electrical wiring. Ozone layer the ozone layer is basically naturally occurring gas in the region of stratosphere where ozone particles are accumulated 2. It allows only the required doses of the suns solar energy to reach the earths surface. A combination of low temperatures, elevated chlorine, and bromine concentrations in the upper stratosphere are responsible for the destruction of ozone. Ozone o 3 depletion does not cause global warming, but both of these environmental problems have a common cause. These gases bring chlorine and bromine to the stratosphere, which cause depletion of the ozone layer. Human activities cause ozone depletion and global warming. Ozone depletion is allowing the uv radiation to earth surface.
Ozone depletion simple english wikipedia, the free encyclopedia. Ozone layer depletion increases the amount of uvb that reaches the earths surface. Yes, an international consensus about the causes and effects of ozone depletion has emerged. Once they get there they destroy ozone molecules and cause the ozone layer to become depleted or thinner. What effects does the depletion of ozone have on environmental processes and. What emissions from human activities lead to ozone depletion. Ppt ozone layer depletion powerpoint presentation free. Questions and answers about the environmental effects of. Ppt ozone layer depletion authorstream presentation. Ozone layer depletion pdf file the origin, causes, mechanisms and bio effects of ozone layer depletion as. Ozone layer introduction the ozone layer refers to the ozone within stratosphere, where over 90% of the earths ozone resides.
Jun 04, 2016 this video contains a tutorial on why ozone layer depletion takes place. The proteins cells in plants undergo harmful mutations, all due to ultraviolet radiations. Silver lining for hole in ozone layer over the arctic. Rush limbaugh argues that humans are safe, because volcanic chlorine has been working on the ozone layer. Unlike pollution which has several causes, there is one specific chemical compound that is responsible for the breakdown of the ozone layer. Within the stratosphere, the ozone layer is the portion that contains the highest. Frequently asked questions about the ozone layer ozone. The depletion of the ozone describes two closely related but distinct phenomena which have been repeatedly observed since the latter 1970s. Global warming is caused by the greenhouse effect, which is essential to life as we know it on planet earth. It is revealed that introduction of chloroflourocarbons cfcs in the environment is the most rated cause. What we all need to understand is the idea that we all are going to have to face the repercussions of ozone layer depletion. Questions and answers about the environmental effects of the ozone layer depletion and 4 climate change. The absorbed heat causes a temperature inversion between 15 to 50 km.
Ozone depletion is primarily caused by human activities. What are some consequences of the ozone layer being. Causes and effects of ozone layer depletion that are. The production and emission of chlorofluorocarbons cfcs, is the leading cause of ozone layer depletion. What is an ozone hole and causes and effects of ozone. Pdf causes of ozone layer depletion and its effects on human. It is ideal photochemical maker due to its long life and stability. Ozone layer and causes, effects and solutions to ozone depletion.
The causes, mechanism and bioeffects of ozone layer depletion on humans were addressed. Causes of ozone layer depletion and its effects on human. But through domestic and international action, the ozone layer is healing and should fully recover by about 2065. Learn about ozone depletion, its causes, and effects. This bad ozone forms when sunlight initiates chemical reactions. 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. Ian grimmond ozone layer depletion when you walk outside, there is a pale blue molecule up in the stratosphere that is protecting you every second of every day of your life, this molecule is called ozone.
Nov 07, 2014 prepared by sanyam, vishal, harshit, nitish and suyash of class ixe to explain the effects of ozone layer. The ozone layer helps to protect life from harmful ultraviolet radiation. Links are provided along the way to more detailed information found elsewhere on the site. Depletion of stratospheric ozone o3, as commonly known as the hole in the ozone layer. Let us have a detailed look at the various causes and effects of ozone layer depletion. Laboratory and epidemiological studies demonstrate that uvb causes nonmelanoma skin cancer and plays a major role in malignant melanoma development. Ozone layer depletion, its causes and its effects free download as powerpoint presentation. To the point where a seasonal hole in the ozone layer began to appear above the antarctic.
Ozone present in the lower atmosphere is regarded as a pollutant and a greenhouse gas, that can contribute to global warming and climate change. Let us see some of the important causes and effects of ozone layer depletion. Fertilizers and pesticides are extensively used in agriculture and are also a source of nitrous oxide production which is the main culprit in depletion of ozone layer. Protection against depletion of stratospheric ozone by chlorofluorocarbons. The ozone layer was doomed until a handful of scientists stood up. Stratospheric ozone depletion leads to an increase in uvb that reach the earths surface, where it can disrupt biological processes and damage a number of materials. Essay on global warming and the depletion of the ozone o3 layer.
Health and environmental effects of ozone layer depletion. Read online causes of ozone layer depletion and its effects on human. An international consensus about the causes and effects of ozone depletion has emerged. 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. Experts blame ozonelayer depletion on manmade chem icals containing chlorine and. Factor of ozone depletion human activities in the last several decades have produced chemicals, such as chlorofluorocarbons cfcs. All books are in clear copy here, and all files are secure so dont worry about it. In fact, a major hole in the ozone layer above the antarctica skyline now threatens the continent badly. The evaporation of surface water through the stomata of leaves increases, which results in the decreased moisture content of the soil. Effect of ozone layer disturbances on humans and environment researcher name.
Oct 12, 2008 ozone depletion by clarisse, suleyman and suzy. Climate change and the effects of ozone depletion on atmospheric circulation are expected to have regionally variable effects on the depth of ocean mixing 203 and ocean circulation see section 1. Ozone reduction in troposphere drastically changes the weather elements like temperature, wind pattern, precipitation etc. The main effect of ozone depletion would be the entering of ultraviolet radiation to the earths surface. It is ideal photochemical maker due to its long life and stability 1 34.
Due to stratospheric ozone layer depletion uv radiations are penetrating in earth atmosphere which result in the production of reduced oxygen. Ozone depletion biology science fair project ideas. At the end of 20, 258 projects have been committed for an. Ozone o3 is a stratospheric layer that plays important role in providing support to humans for their survival. Ozone depletion consists of two related events observed since the late 1970s. There are many causes for ozone depletion, but the most important process in both trends is catalytic destruction of ozone by atomic chlorine and. Causes, effects and solutions of ozone layer depletion. Depletion of ozone layer is also causing the problem of food shortage to humans. Follow farley the reporter as he learns about this issue. It will magnify the effects of ultraviolet rays on human health.
The ozone hole in antarctica the seasonal thinning of the ozone layer of the earths atmosphere above antarctica, so allowing abnormal amounts of ultraviolet light to reach the earths surface in those regions. Another observation is an increase in the ozone present in the lower atmosphere due to the decrease in the ozone in the stratosphere. With depletion in ozone s layer, we humans are more prone to uv rays that reaches the earths surface. Pdf causes of ozone layer depletion and its effects on.
The ozone hole in antarctica cool antarctica, pictures. One of the main reasons for the widespread concern about depletion of the ozone layer. Global warming and the depletion of the ozone o3 layer the average surface temperature on earth has increased approximately 1. Health and environmental effects of ozone layer depletion epa. Cfcs account for almost 80% of the total depletion of ozone. Causes, effects and solutions of ozone layer depletion earth. The origins of uncertainty about the factors that affect the ozone layer are, as seen, very diverse. This introduction to ozone depletion first describes the causes and effects of ozone depletion, and then explains some of the solutions. Credible scientific studies have substantiated that the cause of ozone layer depletion is human activity, specifically, humanmade chemicals that contain chlorine. The causes, mechanism and bio effects of ozone layer depletion on humans were addressed.
Ozone layer depletion, its causes and its effects ozone. Learn more about the process, causes, and effects of ozone layer depletion. Ozone layer depletion and its effects 1575 words 7 pages. The ozone layer is a deep blanket in the stratosphere made up of comparatively high concentration of the ozone. Effect of ozone layer disturbances on humans and environment. What emissions from human activities lead to ozone.