大气污染英语版课件

Air Pollution Key speaker:kai hao YuAir Pollution 1Introduction We all know that clean air is important to good health.Wherever you go and whatever you do,you are always surrounded by a sea of gases that we call air.If there are impurities(杂质)in the air,they may be absorbed by our bodies and make us ill.We need clean air,but unfortunately,air pollution is globally present,especially in cities.Introduction We all know 2Reveal a common and serious problem in ChinaReveal a common and serious pr3First:Causes and current statusSecond:Pollution typesThird:Hazard and SolutionsFirst:Causes and current statu4 Now the air we breathe is polluted.Why was the atmosphere pollution?Factories and automobile exhaust are the major reasons.Now the air we breathe is p5statuspoint one:Acid rain keywords:pH,C ,SO2 ,southeast of china statuspoint one:Acid rain 6 point two:Urban air quality keywords:SO2,both sides of the road severe pollution in northern winter point two:Urban air quality7 point three:Indoor air quality keywords:urban renovation ,indoor open flame Many people spend large portion of time indoors-as much as 80-90%of their lives.We work,study,eat,drink and sleep in enclosed environments where air circulation may be restricted.For these reasons,some experts feel that more people suffer from the effects of indoor air pollution than outdoor pollution.point three:Indoor air qual8pollution types:1,nitrogen oxide(NOx)Is the representative if atmospheric pollution causes substance.The reason is caused by nitrogen oxides of boiler(锅炉),automobile etc discharge smoke.This kind of smoke after burning in the air as nitric oxide in line,air become nitrogen dioxide.Nitric oxide is the reason causing acid rain.大气污染英语版课件92,floating particle shape material(SPM浮游粒子状浮游粒子状物质物质)Material is in air zooplankton floating substance,is one of the atmospheric pollution of pollution.In addition,the smoke from factory car emissions,outside of man-made factors such as volcano,forest disasters occur naturally natural disaster is also one of the reasons it.Floating particle shape material is harmful to human health of atmospheric pollution substances,can cause respiratory patients rise of mortality.2,floating particle shape mat103,photochemical Photochemical cars,factories,etc okindanto is the nitrogen oxides and hydrocarbon（碳氢化合物）discharge atmospheric pollution substances such as with the suns ultraviolet ray to human body produces chemical reaction,the effects of atmospheric pollution substances,is why tuck photochemical.When okindanto high concentration of chemical when can lead to eyes,throat uncomfortable.3,photochemical 114,sulfur dioxide(SO2)sulfonylureas So2 is coal,oil burning sulfonylureas when atmospheric pollution produced.Characteristics of sulfur dioxide like an egg sulfonylureas when the smell of rotting out.The onset of pollution caused asthma（哮喘）reason is caused by sulfur dioxide sulfonylureas atmospheric pollution.5,carbon monoxide(CO)Carbon monoxide is incomplete combustion by oil caused insipidity,odourless,colorless,no stimulation atmosphere pollutants.Carbon monoxide is very terrible atmospheric pollutants,if absorbed a lot of carbon monoxide can lead to death.4,sulfur dioxide(SO2)sulfon12 Hazard of air pollution(1)To human health(2)To animals and plants(3)To weather and climate Hazard of air pollution13Studies have estimated that the number of people killed annually in the US alone could be over 50,000.Older people are highly vulnerable to diseases induced by air pollution.Those with heart or lung disorders are under additional risk.Children and infants are also at serious risk.Diseases such as bronchitis（支气管炎）,lung cancer,and heart disease may all eventually appear in people exposed to air pollution.Studies have estimated that th14Look at their eyes.How poorLook at their eyes.How poor15Air pollutants such as ozone,nitrogen oxides,and sulfur dioxide also have harmful effects on natural ecosystems.They can kill plants and trees by destroying their leaves,and can kill animals,especially fish in highly polluted rivers.Air pollutants such as ozone,16The air pollution brings us so many pain and burden,so next.We should know how canwe prevent the damaging effects of air pollution?The air pollution brings us so17 On the whole,the elimination（排除）of air pollution needs the co-efforts（努力）from the government,the public and the environments.This problem will be solved only with the help of science and technology.On the whole,the eliminati18 The first step to solving air pollution is assessment.Researchers have investigated outdoor air pollution and have developed standards for measuring the type and amount of some serious air pollutants.Prevention is another key to controlling air pollution.The regulatory agencies mentioned above play an essential role in reducing and preventing air pollution in the environment.The first step to solving a19 The last but not the least,we everybody should be aware of the importance of the air and take actions to protect it.only in this way can we have a brighter and better future.So lets move up.The last but not the least,w20 Thank you Thank you21