高中英语 全一册课件新人教版选修6_19

《高中英语 全一册课件新人教版选修6_19》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、Unit4GlobalWarmingenergysourcesWedependonenergytodomanythingsinourdailylives.Forexample,energylightsourcitiesandheatsourbuildings.Makealistofthingsthatuseenergyinyourhome,inyourschool,oranyotherplacesyoucanthinkof.stovelightthingsthatuseenergyinyourhomemicro-wav

2、eovencassetteplayerheatingtelevisionhairdryervideoplayerfridgecomputerwashingmachinestoveWindenergyisusedaspowertoproduceelectricity.Windmillswhereelectricityisproducedbyburningcoals.Thecoalpowerstationsinwhichoilisrefinedandmadepure.TheOilRefineriesafacilitydes

3、ignedtoconvertnuclearenergyintoelectricity.Anuclearpowerplantontheroofofahouseonabrightsunnydayareusedtocollectsolarenergy,makingyourhousewarmorheatingyourwater.Solarpanelsareusedtokeepbackwaterandraiseitslevelforirrigationorforproducingelectricity,etc.TheHydro-

4、electricdamsGuessit!UraniumOre(铀矿石)Theelementuraniumdoesnotoccurinpureforminnaturebutisfoundinmineralssuchascarnotite（钒钾铀矿）,picturedhere.Whatsourceofenergy?Geysers(间歇泉)Geothermal(地热的)EnergyPlantAnenergysourceis“renewable”whensuppliesofitneverrunoutand“non-renewa

5、ble”whenonedaytheywillrunout.Whichenergysourcesonyourlistarerenewableandwhicharenon-renewable?DiscussThingsthatuseenergyinyourhomeSourcesofenergyRenewable/non-renewablelightheatingtelevisioncassetteplayervideoplayercomputerfridgestovewashingmachinehairdryercoalo

6、ilnaturalgaswind(windpower)sun(solarenergy)uranium(nuclearenergy)water(hydro-electricpower)plantwaste(biomassenergy)hotspringorgeysers(geothermalenergy)thesea(tidalenergy)non-renewablenon-renewablenon-renewablerenewablerenewablenon-renewablerenewablerenewableren

7、ewablerenewableWhatarethesebuildingsmadeofandwhatistheirpurpose?Theyaremadeofglassandplantscangrowinitwhenitiscoldoutside.Howdoesitwork?Theglasstrapstheheatfromthesun,makingtheairwarmsothatplantscangrowbetter.Greenhousegases!What’sgreenhousegaseseffect?Greenhous

8、egasesperformthesamefunctionastheglassinagreenhouse---Theytraptheheatofthesunandkeeptheairsurroundingtheearthwarm.Itiscalledthegreenhouseeffect.TheEarthIsBecomingWarm