英语：选修6_Unit4_Global_warming-Warming_up&Reading课件(新

WordsstudyGlobalwarmingUnit41.Whatisglobalwarming?Theearthisbecomingwarmer.2.Whatcausestheglobalwarming?Humanactivity—burningoffossilfuelsGreenhouseeffect—greenhousegasesHugequantitiesofextracarbondioxideOtherreasons?Thingsthatuseenergyaroundusoratanyotherplaces:Inahouselights,heating,computer,hairdryer,cassetteplayer,videorecorder,CDplayer,Mp3/Mp4,television,fridge,Stovewashingmachine,aircondition,micro-waveovenwaterheater,inductioncookervideo-phone盒式录音机空调微波炉电磁炉电视电话•Coal•Oil•Naturalgas•Uranium铀•Wind(windpower)•Sun(solarenergy)•Water(hydro-electricpower)•Plantwaste(biomassenergy)生物能•Hotspringsorgeysers(geothermalenergy)地热能•Thesea(tidalenergy)FossilfuelsNon-renewableRenewablewheredoesalltheenergycomefrom?Windenergyisusedaspowertoproduceelectricity.Windmills(风车）whereelectricityisproducedbyburningcoals.ThecoalpowerstationsSolarpanels•anoilrefineryafacilitydesignedtoconvertnuclearenergyintoelectricity.Anuclearpowerplanthydro-electricdamsWhat’sthedifferencebetweenwindpowerandcoalpower?Windwillneverrunoutwhilecoalisalimitedsource.Whichisrenewableenergyandwhichisnon-renewableenergy?Pre-readingWhatisitinthepicture?It’sagreenhousemadeofglass.Whatisitusedfor?It’susedforgrowingplants,especiallyduringcoldweather.Howdoesitwork?Theairinsideiswarmbecausetheglasstrapstheheatfromthesunandkeepsitfromescaping.Thismakesthegreenhouseheatupandsotheplantscangrowthroughoutthecoldperiod.GreenhouseEffectGlobalwarmingGreenhousegasestrappedtheheatfromthesun,whichcausesthetemperatureofearthgoesup.4.GreenhouseEffectGlobalwarmingGreenhousegasestrappedtheheatfromthesun,whichcausesthetemperatureofearthgoesup.THEEARTHISBECOMINGWARMERBUTDOESITMATTER?Reading’scheckit:Whowrotethearticle?Whatisthenameofthemagazine?Whatarethenamesofthe3scientists?SophieArmstrongEarthCareDrJaniceFoster,CharlesKeeling,GeorgeHambleyLOGO)Howmanyparagraphsdoesthereading2)Makeadivisionofthetextandfindoutthemainideasofeachpart.Readthepassagequickly(3’)textconsistof?Pleasenumberthem.Fast-ReadingLOGO(1)Introduceadebateovertheissueofglobalwarming.raisingaquestionPart2(2-5)Howglobalwarmingcomesabout.givingexamples,usinggraphs,explanationLOGO(6)Listtwodifferentattitudesamongscientiststowardsglobalwarming.Part4(7)It'suptoreaderstothinkanddecidewhetherpeopleshoulddosomethingaboutglobalwarmingornot.givingexamples,makingcontrastleavingaquestionLOGO(1)Introductionofglobalwarming.(2-5)1.Howglobalwarmingcomesabout?2.Whatarethetwographsabout?AndWhataretheGreenhousegases?(2-5)Howglobalwarmingcomesabout?theburningoffossilfuelshumanactivityCarbondioxideMethaneWhataretheGreenhousegases?1.2.3.Watervapor(6)Listtwodifferentattitudesamongscientiststowardsglobalwarming.NegativeeffectsPositiveeffects(7)Aretheriskstoogreat?Socanyoupredictthefutureoftheglobalwarming?Trueorfalse?(P27)ReadingComprehension21.Thetemperatureinthelastcenturydidn’tseemtoincreasemuch.2.Everyonebelievesthatglobalwarmingiscausedbytheactivitiesofhumans.3.JaniceFosterbelievesshecanmeasurethefutureglobalriseintemperature.4.Theriseincarbondioxideiscausingasteadyincreaseinglobalwarming.5.GeorgeHambleybelievesthatglobalwarmingwilldogoodratherthanharmtotheearth.6.Itisclearwhattheeffectsofglobalwarmingwillbe.whichscientist’sopiniondoyouagreewith?DiscussionAssignment1.Readthepassageagainandreviewthenewwordsandexpressions.