2023学年完整公开课版度人教版Unit4GlobalwarmingPeriod1Warmingupand

Book6Unit4GlobalwarmingPeriod1WarmingupandreadingWarmingupListthingsthatuseenergysourcesofenergyrenewable/non-renewableWordsandexpressions

Fossilfuel(化石燃料):Ancientanimalandplantmaterialbelowthesurfaceoftheearthwithahighcarboncontent[kən'tent]内容，目录；满足；容量,suchascoal,oilandnaturalgas,whichcanbeburnttoproduceenergy;alsoknownasnon-renewableenergybecauseoncetheyareusedtheyhavegoneforever;theycannotberenewed.Whatarefossilfuels?

Fromthefollowingpictures,youwillknowwhereallthisenergycomesfrom.windmills[‘wɪnd’mɪl](风车)windpower风力acoalpowerstation燃煤发电站anoilrefinery炼油厂

[rɪ'faɪnəri]

anuclearpowerplant原子能发电站solarpanels

[‘pænl]太阳能接收器ahydro-electricdam[‘haidrəui’lektrik]

水坝adj.水力发电的SamplelistsThingsthatuseenergySourcesofenergyRenewable/non-renewablelightHeating取暖设备

televisioncassette[kə'set]

player卡式录音机videorecorder

oilcoalnaturalgaswind(windpower)sun(solarenergy)renewablerenewablenon-renewablenon-renewablenon-renewablefridgestovewashingmachinehair-dryerwater(hydro-electric)renewableplantwaste(biomassenergy)renewablehotspringsorgeysers(geothermalenergy)renewablethesea(tidalenergy)renewablecomputer

uranium(nuclearenergy)

[jʊ'renɪəm]

铀non-renewableRenewableornon-renewable?√Renewableornon-renewable?['baɪomæs]

【能源】(作为潜在能源物质的)有机物；生物堆，生物燃料√RenewableEnergyRenewableenergysources,suchasthesun,wind,rain,andplantmatter植物物质,naturallyandcontinually"renew"themselves.

Theserenewableenergysourcesare:Biomass-organic(plant,animal)materials【能源】(作为潜在能源物质的)有机物；生物堆，生物燃料Geothermal[dʒiːə(ʊ)'θɜːm(ə)l]

地热-theheatoftheearthHydroelectric[haɪdrəʊɪ'lektrɪk水力发电的

-energyfromflowingorfallingwater(streams,dams)Oceanenergy-fromwaves,tides[海洋]潮汐

,ortemperaturedifferencesintheoceanSolar-fromthesun(twotypesofsystems:solarthermal['θɝml]太阳能

andphotovoltaic[,fəʊtəʊvɒl'teɪɪk]

太阳光电

)Wind-fromthewindWhatistoldinthepicture?non-renewableenergysource

NotestoRenewableenergyRenewableenergyresourcesmaybeuseddirectly,orusedtocreateothermoreconvenientformsofenergy.Examplesofdirectusearesolarovens,geothermal(地温)heating,andwaterandwindmills.Examplesofindirectusewhichrequireenergyharvestingareelectricitygenerationthroughwindturbines(涡轮)orphotovoltaic(光电的)cells,orproductionoffuelssuchasethanol(酒精)frombiomass(生物量).

Renewableenergy(sources)orREScapturetheirenergyfromexistingflowsofenergy,fromon-goingnaturalprocesses,suchassunshine,wind,flowingwater,biologicalprocesses,andgeothermalheatflows.

Mostrenewableenergy,otherthangeothermalandtidalpower,ultimately(基本上)comefromtheSun.Someformsarestoredsolarenergysuchasrainfallandwindpowerwhichareconsideredshort-termsolar-energystorage,whereastheenergyinbiomass(生物量)isaccumulated(积聚)overaperiodofmonths,asinstraw,orthroughmanyyearsasinwood.

Capturingrenewableenergybyplants,animalsandhumansdoesnotpermanentlydeplete(耗尽)theresource.Fossilfuels,whiletheoreticallyrenewableonaverylongtime-scale,areexploitedatratesthatmaydepletetheseresourcesinthenearfuture.1.Haveyoueverseenagreenhouse?Pre-reading2.Whatisthegreenhousemadeandusedfor?A

greenhouse

ismadeofglassandisusedforgrowingplants,

especially(特别，尤其)duringcoldweather.3.Howdoesthegreenhousework?Theairinsidewaswarmbecausetheglasstraps(挡住，吸收)theheatfromthesunandkeepsitfromescaping（逃跑）.Thismakesthegreenhouseheatup（热量上升）

andsotheplantscangrowthroughout(在…期间)thecoldperiod.Whatarethe“greenhousegases”?Whatdoyouthinkgreenhousegasesdo?GreenhouseGasesMethane['miːθeɪn]

4Ozone['əʊzəʊn]臭氧层51Carbondioxide2Watervapor[veipə]

11Nitrousoxide一氧化氮

['naɪtrəs]3greenhouseeffectAgreenhouseismadeofglassandisusedforgrowingplantsthroughoutthecoldweather.Theglasstrapstheheatfromthesunandkeepsitfromescaping.Theatmospheresurroundstheearthandcontaincertaingasesinit.Thegasesarecalledgreenhousegaseswhichalsotraptheheatfromthesunandkeeptheearthwarm.GreenhouseAtmosphereGlancequicklyatthemagazinearticleandanswerthequestions.Reading1.Whowrotethemagazinearticle?Whatisthenameofthemagazine?SophieArmstrong.EarthCare.2.Whatarethenamesofthethreescientistsmentionedinthearticle?DrJaniceFoster,CharlesKeeling,GeorgeHambley.3.Whatdotheythinkaboutglobalwarming?Dotheyagreewithoneanother?Therearesomeverydifferentattitudesamongscientiststowardsthisissue.Somethinktheeffectswillbeterrible,whilesomeothersbelievethatweshouldnotworryaboutit.4.Whatarethetwographsabout?Graph1showsthetemperatureincreaseofonedegreeFahrenheitbetween1860to2000.Graph2showsthecarbondioxidecontentintheatmospherefrom1957to1997.5.Whatisthemaintopicofthearticle?GlobalwarmingConstruct

MainideasofeachpartPart1(1)Introduceadebateovertheissueofglobalwarming.Part2(2-5)Howglobalwarmingcomesabout.Part3(6)Listtwodifferentattitudesamongscientiststowardsglobalwarming.Part4(7)It'suptoreaderstothinkanddecidewhetherpeopleshoulddosomethingaboutglobalwarmingornot.Readthepassagecarefullyandjudgewhetherthestatementsaretrueorfalse?Thetemperatureinthelastcenturydidnotseemtoincreasemuch.Everyonebelievesthatglobalwarmingiscausedbytheactivitiesofhumans.JaniceFosterbelievesthatshecanmeasurethefutureglobalriseintemperature.FTT4.Theriseincarbondioxideiscausingasteadyincreaseinglobalwarming.5.GeorgeHambleybelievesthatglobalwarmingwilldogoodratherthanharmtotheearth.6.Itisclearwhattheeffectsofglobalwarmingwillbe.TTF1.Greenhousegasesreferto____.A.carbondioxideB.theburningoffossilfuelsC.byproductsoftheburningoffossilfuelsD.coal,naturalgasandoilCScanning2.Greenhouseeffect____.A.isanaturalphenomenonB.happenswhenthere’stoomuchcarbondioxideC.doesgreatharmtohumanbeingsD.makeslifeforhumanbeingsbetterA3.WhichofthefollowingisTRUEaccordingtothetext?A.ThetemperatureoftheearthincreasedaboutonedegreeFahrenheitduringthe20thcentury.B.Thecarbondioxidecontentintheairincreasedby70partspermillionfrom1957to1997.C.Allscientistsacceptthedataingraph2exceptCharlesKeeling.D.JaniceFostersaysthatmorecarbondioxidewillmakeplantsgrowfaster.A4.WhichofthefollowingisDrJaniceFoster’sopinion?A.Theresultofthetemperatureincreasewillbeserious.B.Theamountofwarmingisnothingserious.C.Weneedn’tworryabouthighlevelsofcarbondioxide.D.Globalwarmingisanaturalphenomenon.A5._____foundouttheamountofcarbondioxideintheatmospherefrom1957to1977.A.Dr.JaniceFosterB.CharlesKeelingC.GeorgeHambleyD.SophieArmstrongA6.Theauthorprobablyagreesthat__.

A.actuallyglobalwarmingisgoodformanB.weshoulddonothingabouttheglobalwarming

C.catastropheswillhappeniftheglobekeepsonwarming

D.alotremainstobefoundoutabouttheeffectsofglobalwarmingD1.Howhastheglobalwarmingcomeabout?①Humanactivity---burningoffossilfuels.②Greenhouseeffect---greenhousegases---weneedthosegases.③Hugequantitiesofextracarbondioxide---from1957to1997---fromaround315partspermilliontoaround370partspermillion.2.Whataretheeffectsofglobalwarming?④Encourageagreaterrangeofanimals.①Thesealeveltorise.②Severestorms,droughts,famines,thespreadofdisease