高二英语（选修六）unit 4 warming up.ppt

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1、Unit4Globalwarming2006-12-111sharleyIsthewholeworldbecomingwarmerandwarmer?Why?2006-12-112sharleyenergysourcesWedependonenergytodomanythingsinourdailylives.Forexample,energylightsourcitiesandheatsourbuildings.Makealistofthingsthatuseenergyinyourhome,inyourschool,oranyotherplacesy

2、oucanthinkof.Warmingup2006-12-113sharleystovelightthingsthatuseenergyinyourhomemicro-waveovencassetteplayerheatingtelevisionhairdryervideoplayerfridgecomputerwashingmachinestove2006-12-114sharleyWindenergyisusedaspowertoproduceelectricity.Windmills2006-12-115sharleywhereelectrici

3、tyisproducedbyburningcoals.Thecoalpowerstations2006-12-116sharleyinwhichoilisrefinedandmadepure.TheOilRefineries2006-12-117sharleyafacilitydesignedtoconvertnuclearenergyintoelectricity.Anuclearpowerplant2006-12-118sharleyontheroofofahouseonabrightsunnydayareusedtocollectsolarener

4、gy,makingyourhousewarmorheatingyourwater.Solarpanels2006-12-119sharleyareusedtokeepbackwaterandraiseitslevelforirrigationorforproducingelectricity,etc.TheHydro-electricdams2006-12-1110sharleyGuessit!UraniumOre(铀矿石)Theelementuraniumdoesnotoccurinpureforminnaturebutisfoundinmineral

5、ssuchascarnotite（钒钾铀矿）,picturedhere.2006-12-1111sharleyWhatsourceofenergy?Geysers(间歇泉)2006-12-1112sharleyGeothermal(地热的)EnergyPlant2006-12-1113sharleyAnenergysourceis“renewable”whensuppliesofitneverrunoutand“non-renewable”whenonedaytheywillrunout.Whichenergysourcesonyourlistarere

6、newableandwhicharenon-renewable?Discuss2006-12-1114sharleyThingsthatuseenergyinyourhomeSourcesofenergyRenewable/non-renewablelightheatingtelevisioncassetteplayervideoplayercomputerfridgestovewashingmachinehairdryercoaloilnaturalgaswind(windpower)sun(solarenergy)uranium(nuclearene

7、rgy)water(hydro-electricpower)plantwaste(biomassenergy)hotspringorgeysers(geothermalenergy)thesea(tidalenergy)non-renewablenon-renewablenon-renewablerenewablerenewablenon-renewablerenewablerenewablerenewablerenewable2006-12-1115sharleyPre-readingWhatarethesebuildingsmadeofandwhat

8、istheirpurpose?Theyaremadeofglassandplan