课件-人教版选修6-unit4-global-warming

words1.consume2.renewable3.greenhouse4.graph5.random6.fuel7.tendency8.steady9.widespread10.oppose1.消费2.能再生的3.温室；花房4.图表5.胡乱的，任意的6.燃料7.趋势8.平稳的9.分布广的；普遍的10.反对1.subscribeto2.beopposedto3.keepon4.evenif5.onthewhole6.goup7.quantitiesof8.comeabput9.consequence10.environmental1.同意，捐赠，2.反对3.继续4.即使5.大体上，基本上6.上升7.大量8.发生9.结果10.环境的Unit4GlobalWarmingSavetheearth!Teachingaims:1.Tomastersomeimportantwordsandphrases.2.Tolearnthedetailsabouttheglobalwarming.3.Toreflectwhatwecandotoprotectourenvironment.energyComman?Theyalluseenergy.windmills,renewable.What?Renewable?What?Whatkind?Renewable?Acoalpowerstation,non-renewable.What?Whatkind?Renewable?Anoilrefinery(精炼厂),non-renewable.What?Whatkind?Renewable?Anuclearpowerstation,non-renewable.What?Whatkind?Renewable?Ahydro-electricdam,renewable.Greenhousegases!1.Whataregreenhousegases?2.What’sgreenhouseeffect?readingTrueorFalse?1.Thetemperaturelastcenturydidn’tincreasemuch.2.Everyonebelievesthatglobalwarmingiscausedbytheactivitiesofhumans.3.JaniceFosterbelievesthatglobalwarmingiscausedbytheburningfossilfuels.4.Naturalgasisagreenhousegas.FFTF5.Carbondioxideisabyproductofburningfossilfuels.6.PeopleacceptCharlesKeeling’sdatabecausehetookaccuratemeasurements.TT7.Floodingcouldbeoneoftheeffectsoffutureglobalwarming.T8.GeorgeHambleybelievesscientistsarejustguessingabouttheeffectsofglobalwarming.T9.GeorgeHambleyisworriedabouttheeffectsofcarbondioxideonplantgrowth.10.Itisclearwhattheeffectsofglobalwarmingwillbe.FFanswerthequestion1.Whowrotethemagazinearticle?Whatisthenameofthemagazine?SophieArmstrong,EarthCare.Therearesomeverydifferentattitudesamongscientiststowardsthisissue.Somethinktheeffectswillbeterrible,whilesomeothersbelievethatweshouldnotworryaboutit.2.Whatdotheythinkaboutglobalwarming?Dotheyagreewithoneanother?Globalwarmingthewarmingoftheearth3.Whatisthemaintopicofthearticle?Choices.1.Whofoundouttheamountofcarbondioxideintheatmospherefrom1957to1977?A.Dr.JaniceFoster.B.CharlesKeeling.C.GeorgeHambley.D.SophieArmstrong.B2.Theauthorprobablyagreesthat________A.actuallyglobalwarmingisgoodforman.B.weshoulddonothingabouttheglobalwarming.C.catastropheswillhappeniftheglobekeepsonwarming.D.alotremainstobefoundoutabouttheeffectsofglobalwarming.DThedifferentideasbetweenDr.JaniceFoster&GeorgeHambleyDr.JaniceFosterGeorgeHambleyCarbondioxidehascausedtheglobaltemperatureto__________.Anincreaseoffivedegreeswouldbea____________andcouldbe______________.Morecarbondioxideisa__________thing,whichmakescrops__________andwillen-courage____________________.goupcatastropheVeryseriouspositiveproduceagreaterrangeofanimalsGreenhousegases!1.Whataregreenhousegases?2.What’sgreenhouseeffect?sunplantsIflackofsolarenergy,theplants…Sealevelgoesup,theanimalscannotexist.droughtfloodfamineDiscussion:Whatshallwedotopreventtheglobalwarming.Homework:1.SurftheInternetformoreinformationaboutglobalwarming.2.Listsomethingsyoucandoforenvironment.Thankyou!