学人教版选修6Unit4Global warmingPeriod1Warming up and reading课件（50张）.ppt

book6unit4globalwarmingperiod1warmingupandreading warmingup wordsandexpressions fossilfuel 化石燃料 ancientanimalandplantmaterialbelowthesurfaceoftheearthwithahighcarboncontent k n tent 内容 目录 满足 容量 suchascoal oilandnaturalgas whichcanbeburnttoproduceenergy alsoknownasnon renewableenergybecauseoncetheyareusedtheyhavegoneforever theycannotberenewed whatarefossilfuels fromthefollowingpictures youwillknowwhereallthisenergycomesfrom windmills w nd m l 风车 windpower风力 acoalpowerstation燃煤发电站 anoilrefinery炼油厂 r fa n ri anuclearpowerplant原子能发电站 solarpanels p nl 太阳能接收器 ahydro electricdam haidr ui lektrik 水坝adj 水力发电的 samplelists lightheating取暖设备televisioncassette k set player卡式录音机videorecorder oil coal naturalgas wind windpower sun solarenergy renewable renewable non renewable non renewable non renewable fridge stove washingmachine hair dryer water hydro electric renewable plantwaste biomassenergy renewable hotspringsorgeysers geothermalenergy renewable thesea tidalenergy renewable computer uranium nuclearenergy j ren m 铀 non renewable renewableornon renewable renewableornon renewable ba om s 能源 作为潜在能源物质的 有机物 生物堆 生物燃料 whatistoldinthepicture 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 reading 2 whatisthegreenhousemadeandusedfor agreenhouseismadeofglassandisusedforgrowingplants 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 greenhousegases greenhouseeffect greenhouse atmosphere glancequicklyatthemagazinearticleandanswerthequestions 1 whowrotethemagazinearticle whatisthenameofthemagazine sophiearmstrong earthcare 2 whatarethenamesofthethreescientistsmentionedinthearticle drjanicefoster charleskeeling georgehambley 3 whatdotheythinkaboutglobalwarming dotheyagreewithoneanother therearesomeverydifferentattitudesamongscientiststowardsthisissue somethinktheeffectswillbeterrible whilesomeothersbelievethatweshouldnotworryaboutit 4 whatarethetwographsabout graph1showsthetemperatureincreaseofonedegreefahrenheitbetween1860to2000 graph2showsthecarbondioxidecontentintheatmospherefrom1957to1997 5 whatisthemaintopicofthearticle globalwarming construct mainideasofeachpart part1 1 introduceadebateovertheissueofglobalwarming readthepassagecarefullyandjudgewhetherthestatementsaretrueorfalse thetemperatureinthelastcenturydidnotseemtoincreasemuch everyonebelievesthatglobalwarmingiscausedbytheactivitiesofhumans janicefosterbelievesthatshecanmeasurethefutureglobalriseintemperature f t t 4 theriseincarbondioxideiscausingasteadyincreaseinglobalwarming 5 georgehambleybelievesthatglobalwarmingwilldogoodratherthanharmtotheearth 6 itisclearwhattheeffectsofglobalwarmingwillbe t t f 1 greenhousegasesreferto a carbondioxideb theburningoffossilfuelsc byproductsoftheburningoffossilfuelsd coal naturalgasandoil c scanning 2 greenhouseeffect a isanaturalphenomenonb happenswhenthere stoomuchcarbondioxidec doesgreatharmtohumanbeingsd makeslifeforhumanbeingsbetter a 3 whichofthefollowingistrueaccordingtothetext a thetemperatureoftheearthincreasedaboutonedegreefahrenheitduringthe20thcentury b thecarbondioxidecontentintheairincreasedby70partspermillionfrom1957to1997 c allscientistsacceptthedataingraph2exceptcharleskeeling d janicefostersaysthatmorecarbondioxidewillmakeplantsgrowfaster a 4 whichofthefollowingisdrjanicefoster sopinion a theresultofthetemperatureincreasewillbeserious b theamountofwarmingisnothingserious c weneedn tworryabouthighlevelsofcarbondioxide d globalwarmingisanaturalphenomenon a 5 foundouttheamountofcarbondioxideintheatmospherefrom1957to1977 a dr janicefosterb charleskeelingc georgehambleyd sophiearmstrong a 6 theauthorprobablyagreesthat a actuallyglobalwarmingisgoodformanb weshoulddonothingabouttheglobalwarmingc catastropheswillhappeniftheglobekeepsonwarmingd alotremainstobefoundoutabouttheeffectsofglobalwarming d 1 howhastheglobalwarmingcomeabout humanactivity burningoffossilfuels greenhouseeffect greenhousegases weneedthosegases hugequantitiesofextracarbondioxide from1957to1997 fromaround315partspermilliontoaround370partspermillion 2 whataretheeffectsofglobalwarming encourageagreaterrangeofanimals thesealeveltorise severestorms droughts famines thespreadofdiseases anddestructionofspecies makeplantsgrowfaster cropswillproducemore thedifferentideasbetweendr janicefoster georgehambley goup catastrophe veryserious positive producemore agreaterrangeofanimals summary skimoverthep