选修6-global-warming-单元课件.ppt

Unit4GlobalWarming warming up Reading Energysources Internationalrelations Money Technology Whichisthemostimportanttoacountry Manpower energysources Wedependonenergytodomanythingsinourdailylives Forexample energylightsourcitiesandheatsourbuildings Makealistofthingsthatuseenergyinyourhome inyourschool oranyotherplacesyoucanthinkof stove light thingsthatuseenergyinyourhome micro waveoven cassetteplayer heating television hairdryer videoplayer fridge computer washingmachine stove Windenergyisusedaspowertoproduceelectricity Windmills whereelectricityisproducedbyburningcoals Thecoalpowerstations afacilitydesignedtoconvertnuclearenergyintoelectricity Anuclearpowerplant ontheroofofahouseonabrightsunnydayareusedtocollectsolarenergy makingyourhousewarmorheatingyourwater Solarpanels areusedtokeepbackwaterandraiseitslevelforirrigationorforproducingelectricity etc TheHydro electricdams Guessit UraniumOre 铀矿石 Theelementuraniumdoesnotoccurinpureforminnaturebutisfoundinmineralssuchascarnotite 钒钾铀矿 picturedhere Whatsourceofenergy Geysers 间歇泉 Geothermal 地热的 EnergyPlant Anenergysourceis renewable whensuppliesofitneverrunoutand non renewable whenonedaytheywillrunout Whichenergysourcesonyourlistarerenewableandwhicharenon renewable Discuss non renewable renewable Whatarethesebuildingsmadeofandwhataretheycalled What stheuse glass greenhouse Agreenhouseisusedforgrowingplants especiallyduringcoldweather Theglasstrapstheheatfromthesun makingtheairwarmsothatplantscangrowbetter trap from keepsthinaplace存住 中的 Howdoesitwork Greenhousegases Intheatmospheresurroundingtheearththerearegases whicharecalled greenhousegases mainlyincluding andwatervapor 水蒸气 carbondioxide CarbondioxideMethaneWatervapor Whatdoyouthinkgreenhousegasesdo Greenhousegasesperformthesamefunctionasthe inagreenhouse They theheatofthesunandtherefore theearth Itisknownas Nowadaysourearthisbecoming greenhouseeffect trap warm warmerandwarmer glass P26TheEarthisBecomingWarmer ButDoesItMatter Fastreading Thisarticleisfrom amagazinetheinternetabook Ithasatitle afirstparagraphthatrunsacrossthepageandisinbold themaintextintwocolumns graphs diagrams twoquotes Whatisthestructureofamagazinelikethisandhowisthetextorganized 1 Whatisthepurposeoftheparagraphthatisinbold Tointroducethetopic Toillustrate 阐述 pointsbyprovidingevidence 2 Whatarethediagramsfor Questionnaires I 3 Whyaretheretwoquotes Becausetheyareimportantorinterestingpoints Theiraimistoattractyourattentionandtomakeyoureadthem andthereforetomakeyouinterestedenoughtoreadthewholearticle Itfunctionsasaconclusionbyaskingthereadertoreflectonthemajorthemeofthetextandtopredictwhatmighthappeninthefuture 4 Whatisthepurposeofthelastparagraphofthearticle SophieArmstrong EarthCare Globalwarming 1 Whowrotethemagazinearticle Whatisthenameofthemagazine 2 Whatisthemaintopicofthearticle GlanceandAnswer DrJaniceFoster CharlesKeeling GeorgeHambley 3 Whatarethenamesofthethreescientistsmentionedinthearticle GlanceandAnswer 4 Whatarethetwographsabout Graph1showsthetemperatureincreaseofonedegreeFahrenheitbetween1860to2000 Graph2showsthecarbondioxidecontentintheatmospherefrom1957to1997 Graph1 Graph2 TrueandFalse P27 2 1 Thetemperaturelastcenturydidn tincreasemuch 2 Everyonebelievesthatglobalwarmingiscausedbytheactivitiesofhumans 3 JaniceFosterbelievesthatshecanmeasurethefutureglobalriseintemperature 4 Naturalgasisagreenhousegas 5 Carbondioxideisabyproductofburningfossilfuels Telltrueorfalse T T F T T Whatattitudesamongscientiststowardsglobalwarming ThedifferentideasbetweenDr JaniceFoster GeorgeHambley goup catastrophe veryserious positive produce agreaterrangeofanimals risebyseveralmetres severestorms droughts famines thespreadofdiseases thedisppearanceofspecies Otherpeople sidea floods Maybe Thesealevelwillrise Maybe Therewillbesomedisasters suchas Flood Drought Famine ForestFire Discussion Whataretheeffectsofglobalwarming Badpoints 1 Thesealeveltorise 2 Severestorms droughts floods famines thespreadofdiseasesandthedestructionofspecies Goodpoints 1 Makeplantsgrowfaster 2 Cropswillproducemore 3 Encourageagreaterrangeofanimals Yesorno 2 Shouldwedoanythingaboutglobalwarming 1 Doyouthinktherisksofglobalwarmingaregreat Debate Weshoulddosomethingaboutglobalwarming Weshoulddonothingaboutglobalwarming GroupA GroupB PK Agreement Disagreement Exactly Allright That sright That sagoodidea Ithinkso Icouldn tagreemore That sexactlymyopinion Idon tthinkso I mafraidnot I mafraidIdisagreewithyou I mafraidIhaveadifferentopinion Ithinkyouareabsolutelywrong Whatareproblemsfacingtheearth Overpopulation waterpollution Deforestationanddesertification 采伐森林沙漠化 Energyshortage Ozone 臭氧 lossandairpollution Privatecarsaregettingmoreandmorepopular Ifyoucanaffordacaroneday willyouthinkofbuyingone Discussion Summary Skimoverthepassage andtellwhatyouhavelearntinclass eg I vele