In another study conducted with teacher candidates, dove 1996 referred to teacher candidates exhibiting the same misconception. Ozone layer depletion and climate change in nigeria. Effects of ozone depletion for humans and the environment. Alternatively, a runaway greenhouse effect, like that found on the planet venus, would result in a surface temperature of 900f or more.
In addition, uvb has been linked to the development of cataracts, a clouding of the eyes lens. Ozone depletion really has to do with two separate, but interconnected truths. Student teacher understanding of the greenhouse effect, ozone. All of the ozone depleting substances controlled by.
Earths natural greenhouse effect is critical to supporting life, and initially was a precursor to life moving out of the ocean onto land. But ozone depletion and climate change are linked in many other ways as well,particularly through. Ozone in the lower atmosphere contributes to global warming and climate change. The relative impacts on climate of various other greenhouse gases are also shown on the figure. Due to green house effect, the average temperature of earth surface is 15c and without green house effect the average temperature would have been 18c.
Electromagnetic energy coming from the sun is absorbed by the earth, which. It absorbs solar ultraviolet radiation, which heats the stratosphere. Stratospheric ozone protection awards since 1990, epa has recognized outstanding achievement in ozone layer protection. Increasing world population and carbon dioxide and methane concentrations. Feb 21, 2018 green house effect and ozone depletion slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Ozone depletion, greenhouse gases, and climate change the. Emissions of greenhouse gases can affect the depletion of. Front matter ozone depletion, greenhouse gases, and climate. Causes of ozone layer depletion and its effects on human. Ozone is very rare in our atmosphere, averaging about three molecules of ozone for every 10 million air molecules. The ozone hole and global warming are not the same thing, and neither is the main cause of the other. The intensity of the downward radiation that is, the strength of the greenhouse effect will depend on the atmospheres temperature and on the amount of greenhouse gases that the atmosphere contains.
Jul 16, 2008 greenhouse gases absorb heat at relatively low altitudes and warm the surfacebut they have the opposite effect in higher altitudes because they prevent heat from rising. Joint symposium on ozone depletion, greenhouse gases, and climate change 1988. Class 9 physical resources ozone layer depletion and causes. Discuss the formation of ozone layer and its depletion. If you continue browsing the site, you agree to the use of cookies on this website. Global warming, green house effect, ozone layer video for. Greenhouse gases warm the earths surface but cool the stratosphere radiatively, and therefore affect ozone depletion. Ozone layer depletion increases the amount of uvb that reaches the earths surface. Ozone layer depletion causes, effects and solutions 7. Global warming potential gwp is the ratio of the warming caused by a substance. Greenhouse effect and thinning of the ozone layer scribd. Depletion of the ozone layer in our atmosphere is primarily attributed to the increase of emissions outputted that are made up of. Jul 28, 2006 one common misconception is that the greenhouse effect is the result of ozone layer depletion. Prospective primary teachers understanding of climate change, greenhouse effect, and ozone layer depletion vasiliki papadimitriou 1 journal of science education and technology volume , pages 299 307 2004 cite this article.
Ozone depletion in the stratosphere and increases in greenhouse gases in the troposphere are both subjects of growing concerneven alarmamong scientists, policymakers, and the public. When elementary preservice teachers were asked about what they attributed the cause of climate change to, 69. The ozone hole and global warming union of concerned scientists. Prospective primary teachers understanding of climate change. Presence of ozone in the lower atmosphere is considered as a pollutant and a greenhouse gas. Ozone layer is an international treaty designed to protect the ozone layerby phasing out the production of numerous substances that are responsible forozone depletion. Effect of greenhouse gas emissions on stratospheric ozone. The depletion of the ozone layer is caused mainly by the increase in emissions of chlorine and brominecontaining compounds like cfcs, halons, carbon. Jul 24, 2012 global warming can be defined as heating of earth because of increase in green house gases carbon dioxide, water vapor, nitrous oxide, and methane. Laboratory and epidemiological studies demonstrate that uvb causes nonmelanoma skin cancer and plays a major role in malignant melanoma development. Nov 27, 2000 answers have been sought to the following questions. The treaty is structured around several groups of halogenated hydrocarbonsthat deplete stratospheric. Apr 10, 2017 the greenhouse effect is the process by which radiation from a planets atmosphere warms the planets surface to a temperature above what it would be without its atmosphere. Greenhouse effect and thinning of the ozone layer free download as powerpoint presentation.
Climate change, global warming, and ozone loss iitk. The ozone hole itself has a minor cooling effect about 2 percent of the warming effect of greenhouses gases because ozone in the stratosphere absorbs heat radiated to space by gases in a lower layer of earths atmosphere the upper troposphere. It was agreed on 16 september 1987, and entered into force on 1 january 1989. Ozone layer is also naturally broken down but there is a balance between its formation and natural depletion.
In a cooler stratosphere, ozone loss creates a cooling effect that results in further ozone depletion. Global warming, green house effect, ozone layer video. Scribd is the worlds largest social reading and publishing site. In contrast, there is a clear understanding that the ozone layer protects the earth from harmful radiation and that it is currently being destroyed by chlorofluorocarbons cfcs. 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. The depletion of the ozone layer is caused mainly by the increase in emissions of chlorine and brominecontaining compounds like cfcs, halons, carbon tetrachloride, methyl chloroform and methyl bromide. Pdf causes of ozone layer depletion and its effects on. 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. The ozone layer is a deep blanket in the stratosphere made up of comparatively high concentration of the ozone.
Ozone depletion vs green house effect the state of the ozone hole in the atmosphere and global warming caused by the green house effect are possibly the most contentious and significant issues that confront mankind. The ozone layer has been linked to climate change in several studies but it is a different phenomenon. Causes, effects and solutions of ozone layer depletion. Click download or read online button to ozone depletion greenhouse gases and climate change book pdf for free now. Global warming can be defined as heating of earth because of increase in green house gases carbon dioxide, water vapor, nitrous oxide, and methane. Download pdf ozone depletion greenhouse gases and climate. Study notes on green house effect biology discussion. Emissions of greenhouse gases can affect the depletion of the ozone layer through atmospheric interaction. This is a phenomenon characterized by warming of the earths atmosphere resulting from absorption of infrared radiation from atmospheric constituents.
Change, greenhouse effect, and ozone layer depletion vasiliki papadimitriou1 climate change is one of the most serious global environmental problems and for that reason there has been lately a great interest in educating pupils, the future citizens, about it. Difference between ozone depletion and green house effect. In spite of this small amount, ozone plays a vital role in the atmosphere. Uv radiation releases heat into the stratosphere when it reacts with ozone. Learn ozone layer and greenhouse effect with free interactive flashcards. Ozone layer depletion is a serious problem facing the earth surface today and its ravaging effect on climate, lives and physical environment are global. How do swedish students in grade 9 1516 years old and grade 12 1819 years old explain the greenhouse effect. The ozone gas in the atmosphere protects mankind from harmful radiation, while the greenhouse gases like carbon dioxide trap heat in the atmosphere thereby raising temperatures worldwide with harmful repercussions for the rest of the world. Ozone layer the ozone layer is basically naturally occurring gas in the region of stratosphere where ozone particles are accumulated 2. Ozone layer depletion causes increased uv radiation levels at the earths surface, which is damaging to human health. Ozone depletion and climate change are linked in a number of ways, but ozone depletion is not a major cause of climate change.
Health and environmental effects of ozone layer depletion. Global warming and ozone layer depletion are two different problems see the sidebar misconceptions about global atmospheric change on page 95. Negative effects include increases in certain types of skin cancers, eye cataracts and immune deficiency disorders. Choose from 83 different sets of ozone layer and greenhouse effect flashcards on quizlet. In view of the coronavirus pandemic, we are making live classes and video classes completely free to prevent interruption in studies. Ozone depletion greenhouse gases and climate change download ozone depletion greenhouse gases and climate change ebook pdf or read online books in pdf, epub, and mobi format. Students understanding of the greenhouse effect, the. Greenhouse gases absorb heat at relatively low altitudes and warm the surfacebut they have the opposite effect in higher altitudes because they. A molecule containing three atoms of oxygen is called ozone. Turkish primary science teacher candidates understandings of. There is an additional factor that indirectly links ozone depletion to climate change. Greenhouse effect hindi vimal singh rathore youtube.
The relationship of ozone depletion and the greenhouse effect. There are two more important hazards which are posing challenges to future existence of our civilization are green house effect and ozone depletion. The scientific assessment of the ozone problem also had large uncertainties. Previous research has shown that pupils of all ages and teachers hold many. Explain greenhouse effect, greenhouse gases, global warming. What is the relationship between the greenhouse effect, ozone. The green house effect is a naturally occurring phenomenon which is responsible for heating the earth surface and atmosphere. The ozone hole is an area in the stratosphere above antarctica where chlorine and bromine gases from humanproduced chlorofluorocarbons cfcs. Nearly 500 organizations, teams, and individuals from 40 countries have received stratospheric ozone protection awards for their exceptional leadership, personal dedication, and technical achievements. Pdf ozone depletion, greenhouse gases, and climate change. As a result the total amount of ozone remains constant. Ozone depletion in the stratosphere and increases in greenhouse gases in the troposphere are both subjects of growing conce.
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