人教新课标选修六

人教新课标选修六第1页/共42页Extremeheat酷暑第2页/共42页

Canyouthinkofsomenaturaldisasters(自然灾害)becauseoftheextremeheat?第3页/共42页drought(旱灾)第4页/共42页fire第5页/共42页flood第6页/共42页hurricane/typhoon第7页/共42页Ifeelhot!第8页/共42页.×√Low-carbonlife（低碳生活）第9页/共42页Isthewholeworldbecomingwarmerandwarmer?Why?populationairpollution…carbondioxideacidrainspeciesextinctionwaterpollution第10页/共42页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。第11页/共42页energysourcesWedependonenergytodomanythingsinourdailylives.Forexample,energylightsourcitiesandheatsourbuildings.Makealistofthingsthatuseenergyinyourhome,inyourschool,oranyotherplacesyoucanthinkof.第12页/共42页stovelightthingsthatuseenergyinyourhomemicro-waveovencassetteplayerheatingtelevisionhairdryervideoplayerfridgecomputerwashingmachinestove第13页/共42页Windenergyisusedaspowertoproduceelectricity.

Windmills第14页/共42页whereelectricityisproducedbyburningcoals.Thecoalpowerstations第15页/共42页inwhichoilisrefinedandmadepure.TheOilRefineries第16页/共42页tochangenuclearenergyintoelectricity.

Anuclearpowerplant第17页/共42页ontheroofofahouseonabrightsunnydayareusedtocollectsolarenergy,makingyourhousewarmorheatingyourwater.Solarpanels第18页/共42页TheHydro-electricdamsareusedtokeepbackwaterandraiseitslevelforirrigationorforproducingelectricity,etc.第19页/共42页

Anenergysourceis“renewable”

whensuppliesofitneverrunoutand“non-renewable”whenonedaytheywillrunout.

Whichenergysourcesonyourlistarerenewableandwhicharenon-renewable?

Discuss第20页/共42页SourcesofenergyRenewable/non-renewablecoaloilnaturalgaswind(windpower)sun(solarenergy)nuclearenergywater(hydro-electricpower)thesea(tidalenergy)non-renewablenon-renewablenon-renewablerenewablerenewablenon-renewablerenewablerenewable第21页/共42页Pre-readingWhatisthegreenhousemadeandusedfor?第22页/共42页greenhouse第23页/共42页Theyaremadeofglassandplantscangrowinitwhenitiscoldoutside.第24页/共42页Howdoesitwork?Theglasstrapstheheatfromthesun,makingtheairwarmsothatplantscangrowbetter.第25页/共42页Greenhousegases!What’sgreenhousegaseseffect?Greenhousegasesperformthesamefunctionastheglassinagreenhouse---Theytraptheheatofthesunandkeeptheairsurroundingtheearthwarm.Itiscalledthegreenhouseeffect.第26页/共42页TheEarthIsBecomingWarmer–ButDoesItMatter?第27页/共42页FastReadingGlanceatthearticleandanswerthesequestions.第28页/共42页SophieArmstrongwrotethemagazinearticle.Thenameofthemagazineis“Earthcare”.2.Whatarethenamesofthethreescientistsmentionedinthearticle?TheyareDr.JaniceFoster,CharlesKeelingandGeorgeHambley.1.Whowrotethemagazinearticle?Whatisthenameofthemagazine?第29页/共42页3.Whatdotheythinkaboutglobalwarming?Dotheyagreewithoneanother?Therearesomeverydifferentattitudesamongscientiststowardsthisissue.Somethinktheeffectswillbeterrible,whilesomeothersbelievethatweshouldnotworryaboutit.第30页/共42页4.Whatarethetwographsabout?Graph1showsthetemperatureincreaseofonedegreeFahrenheitbetween1860to2000.Graph2showsthecarbondioxidecontentintheatmospherefrom1957to1997.Graph1:Graph2:第31页/共42页5.Whatisthemaintopicofthearticle?Globalwarming/Thewarmingoftheearth.第32页/共42页1.Thetemperatureinthelastcenturydidn’tincreasemuch.2.Everyonebelievesthatglobalwarmingiscausedbytheactivitiesofhumans.3.JaniceFosterbelievesthatshecanmeasurethefutureglobalriseintemperature.4.Theriseincarbondioxideiscausingasteadyincreaseinglobalwarming.5.GeorgeHambleybelievesthatglobalwarmingwilldogoodratherthanharmtoearth.6.Itisclearwhattheeffectsofglobalwarmingwillbe.

Readthearticlecarefully.Telltrueorfalse.TTFTTF第33页/共42页Detailed-ReadingReadthearticleindetailsandfinishthefollowingtask.第34页/共42页1.Whofoundouttheamountofcarbondioxideintheatmospherefrom1957to1977?

A.Dr.JaniceFoster.

B.CharlesKeeling.

C.GeorgeHambley.

D.SophieArmstrong.第35页/共42页2."Buttherearesomeverydifferentattitudesamongscientiststowardsthisissue.”

“issue"heremeansthesameastheonein___.

A.Iboughtthenewstamponthedayofitsissue.

B.Theyaretalkingaboutoneofthekeyissuesintheelectioncampaign.

C.Thegovernmentisexpectedtoissueastatementabouttheelection.

D.Themagazinehas12issueseachyear.第36页/共42页3.Theauthorprobablyagreesthat________

A.actuallyglobalwarmingisgoodforman.

B.weshoulddonothingabouttheglobalwarming.

C.catastropheswillhappeniftheglobekeepsonwarming.

D.alotremainstobefoundoutabouttheeffectsofglobalwarming.第37页/共42页4.Howhastheglobalwarmingcomeabout?①Humanactivity---burningoffossilfuels.②Greenhouseeffect---greenhousegases---weneedthosegases.③Hugequantitiesofextracarbondioxide---from1957to1997---fromaround315partspermilliontoaround370partspermillion.第38页/共42页5.Whataretheeffectsofglobalwarming?④Encourageagreaterrangeofanimals.①Thesealeveltorise.②Severestorms,droughts,famines,thespreadofdiseases,anddestructionofspecies.③Makeplantsgrowfaster.Cropswillproducemore.第39页/共42页Paragraph1Paragraphs2&5Paragraph6Part1Part2Part4Main