人教新课标选修六Unit4 Global warming-Warming_up_&_Reading[

Unit4---warmingupandreadingGlobalwarmingExtremeheat酷暑Canyouthinkofsomenaturaldisasters(自然灾害)becauseoftheextremeheat?drought(旱灾)firefloodhurricane/typhoonIfeelhot!.×√Low-carbonlife（低碳生活）Isthewholeworldbecomingwarmerandwarmer?Why?populationairpollution…carbondioxideacidrainspeciesextinctionwaterpollution全球气候变暖是一种“自然现象”。人们焚烧化石矿物以生成能量或砍伐森林并将其焚烧时会产生二氧化碳等多种温室气体。这些温室气体对来自太阳辐射的可见光具有高度的透过性，而对地球反射出来的长波辐射具有高度的吸收性，能强烈吸收地面辐射中的红外线，导致全球气候变暖，也就是常说的“温室效应”。全球变暖会使全球降水量重新分配、冰川和冻土消融、海平面上升等，既危害自然生态系统的平衡，更威胁人类的食物供应和居住环境。energysourcesWedependonenergytodomanythingsinourdailylives.Forexample,energylightsourcitiesandheatsourbuildings.Makealistofthingsthatuseenergyinyourhome,inyourschool,oranyotherplacesyoucanthinkof.stovelightthingsthatuseenergyinyourhomemicro-waveovencassetteplayerheatingtelevisionhairdryervideoplayerfridgecomputerwashingmachinestoveWindenergyisusedaspowertoproduceelectricity.Windmillswhereelectricityisproducedbyburningcoals.Thecoalpowerstationsinwhichoilisrefinedandmadepure.TheOilRefineriestochangenuclearenergyintoelectricity.Anuclearpowerplantontheroofofahouseonabrightsunnydayareusedtocollectsolarenergy,makingyourhousewarmorheatingyourwater.SolarpanelsTheHydro-electricdamsareusedtokeepbackwaterandraiseitslevelforirrigationorforproducingelectricity,etc.Anenergysourceis“renewable”whensuppliesofitneverrunoutand“non-renewable”whenonedaytheywillrunout.Whichenergysourcesonyourlistarerenewableandwhicharenon-renewable?DiscussSourcesofenergyRenewable/non-renewablecoaloilnaturalgaswind(windpower)sun(solarenergy)nuclearenergywater(hydro-electricpower)thesea(tidalenergy)non-renewablenon-renewablenon-renewablerenewablerenewablenon-renewablerenewablerenewablePre-readingWhatisthegreenhousemadeandusedfor?greenhouseTheyaremadeofglassandplantscangrowinitwhenitiscoldoutside.Howdoesitwork?Theglasstrapstheheatfromthesun,makingtheairwarmsothatplantscangrowbetter.Greenhousegases!What’sgreenhousegaseseffect?Greenhousegasesperformthesamefunctionastheglassinagreenhouse---Theytraptheheatofthesunandkeeptheairsurroundingtheearthwarm.Itiscalledthegreenhouseeffect.TheEarthIsBecomingWarmer–ButDoesItMatter?FastReadingGlanceatthearticleandanswerthesequestions.SophieArmstrongwrotethemagazinearticle.Thenameofthemagazineis“Earthcare”.2.Whatarethenamesofthethreescientistsmentionedinthearticle?TheyareDr.JaniceFoster,CharlesKeelingandGeorgeHambley.1.Whowrotethemagazinearticle?Whatisthenameofthemagazine?3.Whatdotheythinkaboutglobalwarming?Dotheyagreewithoneanother?Therearesomeverydifferentattitudesamongscientiststowardsthisissue.Somethinktheeffectswillbeterrible,whilesomeothersbelievethatweshouldnotworryaboutit.4.Whatarethetwographsabout?Graph1showsthetemperatureincreaseofonedegreeFahrenheitbetween1860to2000.Graph2showsthecarbondioxidecontentintheatmospherefrom1957to1997.Graph1:Graph2:5.Whatisthemaintopicofthearticle?Globalwarming/Thewarmingoftheearth.1.Thetemperatureinthelastcenturydidn’tincreasemuch.2.Everyonebelievesthatglobalwarmingiscausedbytheactivitiesofhumans.3.JaniceFosterbelievesthatshecanmeasurethefutureglobalriseintemperature.4.Theriseincarbondioxideiscausingasteadyincreaseinglobalwarming.5.GeorgeHambleybelievesthatglobalwarmingwilldogoodratherthanharmtoearth.6.Itisclearwhattheeffectsofglobalwarmingwillbe.Readthearticlecarefully.Telltrueorfalse.TTFTTFDetailed-ReadingReadthearticleindetailsandfinishthefollowingtask.1.Whofoundouttheamountofcarbondioxideintheatmospherefrom1957to1977?A.Dr.JaniceFoster.B.CharlesKeeling.C.GeorgeHambley.D.SophieArmstrong.2.Buttherearesomeverydifferentattitudesamongscientiststowardsthisissue.”“issueheremeansthesameastheonein___.A.Iboughtthenewstamponthedayofitsissue.B.Theyaretalkingaboutoneofthekeyissuesintheelectioncampaign.C.Thegovernmentisexpectedtoissueastatementabouttheelection.D.Themagazinehas12issueseachyear.3.Theauthorprobablyagreesthat________A.actuallyglobalwarmingisgoodforman.B.weshoulddonothingabouttheglobalwarming.C.catastropheswillhappeniftheglobekeepsonwarming.D.alotremainstobefoundoutabouttheeffectsofglobalwarming.4.Howhastheglobalwarmingcomeabout?①Humanactivity---burningoffossilfuels.②Greenhouseeffect---greenhousegases---weneedthosegases.③Hugequantitiesofextracarbondioxide---from1957to1997---fromaround315partspermilliontoaround370partspermillion.5.Whataretheeffectsofglobalwarming?④Encourageagreaterrangeofanimals.①Thesealeveltorise.②Severestorms,droughts,famines,thespreadofdiseases,anddestructionofspecies.③Makeplantsgrowfaster.Cropswillproducemore.Paragraph1Paragraphs2&5Paragraph6Part1Part2Part4MainideaofthetextPart3Paragraph7Howglobalwarmingcomesabout?(全球变暖是怎样产生的)Twodifferentopinionsaboutglobalwarming.Theearthisbecomingwarmer.Shouldwedoanything?ThedifferentideasbetweenDr.JaniceFoster&GeorgeHambleyDr.JaniceFosterGeorgeHambleyCarbondioxidehascausedtheglobaltemperatureto__________.Anincreaseoffivedegreeswouldbea____________andcouldbe______________.Morecarbondioxideisa__________thing,whichmakescrops__________andwillencourage____________________.goupcatastropheveryseriouspositiveproduceagreaterrangeofanim