新人教选修六-Unit-4-Global-warming[单元课件]学习资料.ppt

《新人教选修六-Unit-4-Global-warming[单元课件]学习资料.ppt》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、新人教选修六-Unit-4-Global-warming[单元课件]TheeffectsofglobalwarmingPositiveeffects:1makeplantsgrowfaster;2cropswillproducemore;3makelifebetterEnergysources?Internationalrelations?Money?Technology?Whichisthemostimportanttoacountry?…Manpower?energysourcesWedependonener

2、gytodomanythingsinourdailylives.Forexample,energylightsourcitiesandheatsourbuildings.Makealistofthingsthatuseenergyinyourhome,inyourschool,oranyotherplacesyoucanthinkof.stovelightthingsthatuseenergyinyourhomemicro-waveovencassetteplayerheatingtelevisionhairdr

3、yervideoplayerfridgecomputerwashingmachinestoveWindenergyisusedaspowertoproduceelectricity.Windmillswhereelectricityisproducedbyburningcoals.Thecoalpowerstationsinwhichoilisrefinedandmadepure.TheOilRefineriesafacilitydesignedtoconvertnuclearenergyintoelectric

4、ity.Anuclearpowerplantontheroofofahouseonabrightsunnydayareusedtocollectsolarenergy,makingyourhousewarmorheatingyourwater.Solarpanelsareusedtokeepbackwaterandraiseitslevelforirrigationorforproducingelectricity,etc.TheHydro-electricdamsAnenergysourceis“renewab

5、le”whensuppliesofitneverrunoutand“non-renewable”whenonedaytheywillrunout.Whichenergysourcesonyourlistarerenewableandwhicharenon-renewable?DiscussionCoalOilNaturalgasUranium[化]铀(nuclearenergy)FossilfuelsNon-renewableWind(windpower)Sun(solarenergy)Water(hydro-e

6、lectricpower)Plantwaste植物性废物(biomassenergy生物团能量)Hotspringsorgeysers间歇泉(geothermalenergy)Thesea(tidalenergy潮汐能)RenewableWhatarefossilfuels?FossilfuelsareAncientanimalandplantmaterialbelowthesurfaceoftheearthwithahighcarboncontent,suchascoal,oilandnaturalgas,wh

7、ichcanbeburnttoproduceenergy.Theyarealsoknownasnon-renewableenergybecauseoncetheyarerunoutof/runout,theycannotberenewed.Whatarethesebuildingsmadeofandwhatistheirpurpose?Theyaremadeofglassandplantscangrowinitwhenitiscoldoutside.Howdoesitwork?Theglasstrapsthehe

8、atfromthesun,makingtheairwarmsothatplantscangrowbetter.Greenhousegases!What’sgreenhousegaseseffect?Greenhousegasesperformthesamefunctionastheglassinagreenhouse---Theytraptheheatofthesunan