优质课课件M6U4 Global Warming THE EARTH IS BECOMING WAR

Unit4GlobalWarming1.consumeenergy2.greenhouse3.greenhousegases4.thegreenhouseeffect5.degreeFahrenheit6.degreeCelsius7.atmosphere8.fossilfuel9.carbondioxide10.renewablesource11.non-renewablesource12.Naturalresources13.Low-carbonlifestyle•消耗能源•温室•温室气体•温室效应•华氏度•摄氏度•大气层•化石燃料•二氧化碳•可再生资源•不可再生资源•自然资源•低碳生活Relatedwords:['færəhait]['selsiəs]1℉=-17℃Thingsthatconsumeenergyinourschoolelectricfanair-conditionermulti-mediacomputerheatinghairdryerThingsthatconsumeenergyathomerefrigeratorcarphonewashingmachineButwheredoesallthisenergycomefrom?Windenergyisusedaspowertoproduceelectricity.windmillswindmillsRenewableWindenergyisusedaspowertoproduceelectricity.Electricityisproducedbyburningcoals.coalpowerstationsnon-renewableOilisrefinedandmadepure.oilrefineriesnon-renewableNuclearenergyisconvertedintoelectricity.nuclearpowerplantnon-renewablePiecesofequipmentonaroofthatcollectsenergyfromsunlightinordertoheatwaterandproduceelectricitysolarpanelsrenewable(地热的)energyplantElectricityisgeneratedfromhotdryrocks.renewable[dʒi:əu'θə:məl]Whatifweuseupthenaturalresourcesoneday?TrafficrestrictionsbasedonthelastdigitoflicenseplatenumbersTrafficrestrictionsbasedoneven-andodd-numberedlicenseplates私家车尾号限行政策单双号限行措施Issuenewcarlicenseplatesviabiddingandlottery通过竞价和摇号两种方式发放车牌ThepolicycameintoeffectinHangzhouThegreenhouseeffectQ1:Whatisagreenhouse?ThegreenhouseeffectQ2:Howdoesitwork?…trap……escaping…heatupThegreenhouseeffectQ3:Whatisgreenhouseeffect?Greenhousegasestraptheheatofthesunandkeepitfromescaping,whichcausesourworldtoheatup.ThegreenhouseeffectQ4:Whatistheresultofgreenhouseeffect?themeltingofglacierstheriseofsealeveltheextinctionofspeciesTHEEARTHISBECOMINGWARMER-BUTDOESITMATTER?Duringthe20thcenturythetemperatureoftheearthroseaboutonedegreeFahrenheit.Thatprobablydoesnotseemmuchtoyouorme,butitisarapidincreasewhencomparedtoothernaturalchanges.Sohowhasthiscomeaboutanddoesitmatter?EarthCare’sSophieArmstrongexploresthesequestions.Duringthe20thcenturythetemperatureoftheearthroseaboutonedegreeFahrenheit.Thatprobablydoesnotseemmuchtoyouorme,butitisarapidincreasewhencomparedtoothernaturalchanges.Sohowhasthiscomeaboutanddoesitmatter?EarthCare’sSophieArmstrongexploresthesequestions.Duringthe20thcenturythetemperatureoftheearthroseaboutonedegreeFahrenheit.Thatprobablydoesnotseemmuchtoyouorme,butitisarapidincreasewhencomparedtoothernaturalchanges.Sohowhasthiscomeaboutanddoesitmatter?EarthCare’sSophieArmstrongexploresthesequestions.Duringthe20thcenturythetemperatureoftheearthroseaboutonedegreeFahrenheit.Thatprobablydoesnotseemmuchtoyouorme,butitisarapidincreasewhencomparedtoothernaturalchanges.Sohowhasthiscomeaboutanddoesitmatter?EarthCare’sSophieArmstrongexploresthesequestions.Duringthe20thcenturythetemperatureoftheearthroseaboutonedegreeFahrenheit.Thatprobablydoesnotseemmuchtoyouorme,butitisarapidincreasewhencomparedtoothernaturalchanges.Sohowhasthiscomeaboutanddoesitmatter?EarthCare’sSophieArmstrongexploresthesequestions.Duringthe20thcenturythetemperatureoftheearthroseaboutonedegreeFahrenheit.Thatprobablydoesnotseemmuchtoyouorme,butitisarapidincreasewhencomparedtoothernaturalchanges.Sohowhasthiscomeaboutanddoesitmatter?EarthCare’sSophieArmstrongexploresthesequestions.Q1.Wherecanyouprobablyseethisarticle?A.inanovelB.inamagazineC.inamathbookD.inanadvertisementDuringthe20thcenturythetemperatureoftheearthroseaboutonedegreeFahrenheit.Thatprobablydoesnotseemmuchtoyouorme,butitisarapidincreasewhencomparedtoothernaturalchanges.Sohowhasthiscomeaboutanddoesitmatter?EarthCare’sSophieArmstrongexploresthesequestions.Q2.Whatistheauthor’sattitudetowardstheproblem?A.ApprovingB.CriticalC.NeutralD.Indifferent=ObjectiveDuringthe20thcenturythetemperatureoftheearthroseaboutonedegreeFahrenheit.Thatprobablydoesnotseemmuchtoyouorme,butitisarapidincreasewhencomparedtoothernaturalchanges.Sohowhasthiscomeaboutanddoesitmatter?EarthCare’sSophieArmstrongexploresthesequestions.Introduction(para1)(para2-5)(para6)Conclusion(para7)BodyHowhasthiscomeabout(para2)Thereisnodoubtthattheearthisbecomingwarmer(seeGraph1)From____to____,thetemperaturewentupabout____degreeFahrenheit.186020001anditishumanactivitythathascausedthisglobalwarmingratherthanarandombutnaturalphenomenon.Allscientistssubscribetotheviewthattheincreaseintheearth’stemperatureisduetotheburningoffossilfuelslikecoal,naturalgasandoiltoproduceenergy.Somebyproductsofthisprocessarecalled“greenhouse”gases,themostimportantoneofwhichiscarbondioxide.DrJaniceFosterexplains:“Thereisanaturalphenomenonthatscientistscallthe‘greenhouseeffect’.Thisiswhensmallamountsofgasesintheatmosphere,likecarbondioxide,methaneandwatervapour,trapheatfromthesunandthereforewarmtheearth.Withoutthe‘greenhouseeffect’,theearthwouldbeaboutthirty-threedegreesCelsiuscoolerthanitis.So,weneedthosegases.Theproblembeginswhenweaddhugequantitiesofextracarbondioxideintotheatmosphere.Itmeansthatmoreheatenergytendstobetra