人教版高二英语选修六第四单元课文预习PPT课件.ppt

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1、AkindsofcatastrophesTsunami海啸）HurricaneFloodMud-rockflowTyphoon（台风）Volcano(火山）Hailstone（冰雹）Fire（火）EarthquakeWhatcausesthem?Unit4---warmingupandreadingGlobalwarmingenergysourcesWedependonenergytodomanythingsinourdailylives.Forexample,energylightsourcitiesandheatsourbuild

2、ings.Makealistofthingsthatuseenergyinyourhome,inyourschool,oranyotherplacesyoucanthinkof.stovelightthingsthatuseenergyinyourhomemicro-waveovencassetteplayer(卡式录音机）heatingtelevisionhairdryervideoplayerfridgecomputerwashingmachinestoveWindenergyisusedaspowertoproduceelect

3、ricity.Windmillswhereelectricityisproducedbyburningcoals.Thecoalpowerstationsinwhichoilisrefinedandmadepure.TheOilRefineriesafacilitydesignedtoconvertnuclearenergyintoelectricity.Anuclearpowerplantontheroofofahouseonabrightsunnydayareusedtocollectsolarenergy,makingyourh

4、ousewarmorheatingyourwater.Solarpanelsareusedtokeepbackwaterandraiseitslevelforirrigationorforproducingelectricity,etc.TheHydro-electricdamsAnenergysourceis“renewable”whensuppliesofitneverrunoutand“non-renewable”whenonedaytheywillrunout.Whichenergysourcesonyourlistarere

5、newableandwhicharenon-renewable?DiscussSourcesofenergyRenewable/non-renewablecoaloilnaturalgaswind(windpower)sun(solarenergy)non-renewablenon-renewablenon-renewablerenewablerenewableWhatarethesebuildingsmadeofandwhatistheirpurpose?Theyaremadeofglassandplantscangrowinitw

6、henitiscoldoutside.Howdoesitwork?Theglasstrapstheheatfromthesun,makingtheairwarmsothatplantscangrowbetter.Greenhousegases!What’sgreenhousegaseseffect?Greenhousegasesperformthesamefunctionastheglassinagreenhouse---Theytraptheheatofthesunandkeeptheairsurroundingtheearthwa

7、rm.Itiscalledthegreenhouseeffect.TheEarthIsBecomingWarmer–ButDoesItMatter?Pleaselookatthefollowingvedio.FastReadingGlanceatthearticleandanswerthequestion.Whatisthestructureofamagazinelikethisandhowisthetextorganized?ReadingcomprehensionReadthearticleagainandfinishcompre

8、hendingonpage27SophieArmstrongwrotethemagazinearticle.Thenameofthemagazineis“Earthcare”.2.Whatarethenamesofthe