高中英语 选修六 4.4《Unit 4listening&speaking》课件.ppt

高中英语 选修六 4.4《Unit 4listening&speaking》课件.ppt

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页数:47页

时间:2020-03-18

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1、新课标人教版课件系列《高中英语》选修(模块)6-4.4Speaking&ListeningWarmingupListThingsthatuseenergySourcesofenergyRenewable/non-renewableFossilfuel(化石燃料):Ancientanimalandplantmaterialbelowthesurfaceoftheearthwithahighcarboncontent,suchascoal,oilandnaturalgas,whichcanbeburnttoproduceenergy.Alsoknownasnon-renew

2、ableenergybecauseoncetheyareusedtheyhavegoneforever;theycannotberenewed.Fromthefollowingpictures,youwillknowwhereallthisenergycomesfrom.windmillsacoalpowerstationanoilrefineryanuclearpowerplantsolarpanelshydro-electricdamSamplelistsThingsthatuseenergySourcesofenergyRenewable/non-renewabl

3、elightheatingcoalnon-renewableoilnon-renewabletelevisioncassetteplayervideorecordercomputernaturalgasnon-renewablewind(windpower)renewablesun(solarenergy)renewableuranium(nuclearenergy)non-renewablefridgestovewashingmachinehairdryerwater(hydro-electric)renewableplantwaste(biomassenergy)r

4、enewablehotspringsorgeysers(geothermalenergy)renewablethesea(tidalenergy)renewableRenewableornon-renewable?√Renewableornon-renewable?√RenewableEnergyRenewableenergysources,suchasthesun,wind,rain,andplantmatter,naturallyandcontinually"renew"themselves.Theserenewableenergysourcesare:Biomas

5、s-organic(plant,animal)materialsGeothermal-theheatoftheearthHydroelectric-energyfromflowingorfallingwater(streams,dams)Oceanenergy-fromwaves,tides,ortemperaturedifferencesintheoceanSolar-fromthesun(twotypesofsystems:solarthermalandphotovoltaic)Wind-fromthewindWhatistoldinthepicture?non-r

6、enewableenergysourceNotestoRenewableenergyRenewableenergyresourcesmaybeuseddirectly,orusedtocreateothermoreconvenientformsofenergy.Examplesofdirectusearesolarovens,geothermal(地温)heating,andwaterandwindmills.Examplesofindirectusewhichrequireenergyharvestingareelectricitygenerationthroughw

7、indturbines(涡轮)orphotovoltaic(光电的)cells,orproductionoffuelssuchasethanol(酒精)frombiomass(生物量).Renewableenergy(sources)orREScapturetheirenergyfromexistingflowsofenergy,fromon-goingnaturalprocesses,suchassunshine,wind,flowingwater,biologicalprocesses,andgeothermalheatflows.M

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