新人教选修6Unit4GlobalwarmingReading阅读课件.ppt

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1、高二英语选修6Unit4GlobalWarmingReadingTHEEARTHISBECOMINGWARMER-BUTDOESITMATTER?Wedependonenergytodomanythingsinourdailylives.Forexample,energylightsourcitiesandheatsourbuildings.Makealistofthingsthatuseenergyinyourhome,inyourschool,oranyotherplacesyoucanthinkof.thingsthatuseenergyinourlifeheating

2、hairdryerfridgetelevisionthingsthatuseenergyinourlifewashingmachineelectromagneticovenelectricfanDoyouknowhowenergyisproduced?Howmanysourcesofenergycanyoulist?Windenergyisusedaspowertoproduceelectricity.windmillsElectricityisproducedbyburningcoals.coalpowerstationsOilisrefinedandmadepure.oilr

3、efineriesNuclearenergyisconvertedintoelectricity.nuclearpowerplantpiecesofequipmentonaroofthatcollectsenergyfromsunlightinordertoheatwaterandproduceelectricitysolarpanelsWaterarekeptbackandraiseditslevelforirrigationorforproducingelectricity.hydro-electricdamsgeothermal(地热的)energyplantElectri

4、cityisgeneratedfromhotdryrocks.Aretheyrenewableornon-renewable?windenergyrenewablesolarenergyrenewablehydroelectricpowerrenewablegeothermalenergyrenewabletidalenergyrenewablebiomassenergyrenewablenuclearpowerplantnon-renewableanoilrefinery(精炼厂)non-renewablecoalpowerstationnon-renewablenatural

5、gasnon-renewableuraniumOre(铀矿石)non-renewable①Whatarethey?②Whatarethesebuildingsmadeof?③What’stheuse?greenhouse/glassAgreenhouseisusedfor_____________,especiallyduring____weather.Pre-readingTurntoPre-reading1,Page25.Read&answer.growingplantscold_____theheatfromthesunkeepsitfrom_____________th

6、eairupHowdoesagreenhousework?trap…from…:keepsthinaplace存住来自…的…trapsescapingheatsIntheatmospheresurroundingtheearththerearegases,whicharecalled“greenhousegases”.methanewatervaporcarbondioxideGreenhousegases?carbondioxideFossilFuel(矿物燃料)coaloilgasglobalwarming●●●●●●?produceWhatdoyouthinkgreenho

7、usegasesdo?Greenhousegases_____theheatofthesunandtherefore______theearth.Itisknownas__________________.Nowadaysourearthisbecoming_____________________.greenhouseeffecttrapwarmwarmerandwarmer1.Comparedtothepastfewyears,what’stheweatherlikethis