Module-6-Unit4-Global-Warming-市公开课一等奖省赛课微课金奖

WelcomebyZhuYanJiashanMiddleSchool1/292/29glacier冰川Theearthisbecomingwarmer.GlobalWarming3/29Whatisagreenhousemadeof?whatisitusedfor?Howdoesitwork?picturereading4/29trapstheheatfromthesunkeepsitfromescapingheatuppicturereading5/29Greenhousegases(CarbondioxideMethane(甲烷,沼气)Watervapor)TheatmosphereGreenhouseeffect6/29Unit2GlobalwarmingTheearthisbecomingwarmer-Butdoesitmatter?7/29Skimtheorganizationofthearticle:

Afirstparagraphthatrunsacrossthepageandisinbold(粗体)AtitleItisaarticlemostprobably.magazineThemaintextisin2columns(栏),andhas2graphs(图表)and2quotes(引言).skimmingWhereisthepassagefrom?8/29Skimthetitle:

THEEARTHISBECOMINGWARMER–BUTDOESITMATTER?Whatisthemaintopic?

A.Theearth. B.Globalwarming.C.Becomingwarmerdoesn’tmatter.skimming9/29Whowrotethemagazinearticle?Whatisthenameofthemagazine?3.Whatarethenamesofthethreescientistsmentionedinthearticle?skimmingTip:InEnglish,somenounsbeginwithacapitalletter,suchasnamesofpeopleandplaces,titlesofmagazines,newspapers,storiesandbooks,people’stitles,etc..10/29Whowrotethearticle?Whatisthenameofthemagazine?Whatarethenamesofthe3scientists?SophieArmstrongEarthCareDrJaniceFoster,CharlesKeeling,GeorgeHambley

skimming11/29scanningWhatmethodsdidthewriterusetomakehisargumentmoreconvincing(更有说服力)?12/29

Whatmethodsdidthewriterusetomakehisargumentmoreconvincing(更有说服力)?CharlesKeelingfoundthatbetweentheseyearsthecarbondioxideintheatmospherewentupfromaround315partstoaround370partspermillion.Dr.JaniceFosterexplains:“Thereisanaturalphenomenon….causingtheglobaltemperaturetogoup.”graphdataquotes13/29ScanningLet’scheckit:The1st

graphshowstheglobaltbetween1860and.ThetemperatureianddecreasedoverthisperiodbutonthewholeitincreasedbyaroundonedegreeFahrenheit.Wecanseefromthegraphthattheearthhasbecomewsinceearlylastcentury.emperaturencreasedarmer14/29ScanningLet’scheckit:The2nd

graphshowstheamountofcdintheatmospherefromto1997.TheCo2content

steadilyioverthisforty-yearperiod.Itwentupfrom315topartspermillion.arbonioxide1957ncreased37015/29Whathascausedglobalwarming?

ItishumanactivitythathascausedthisglobalwarmingWhathumanactivityismentionedinthearticle?

Theburningfossilfuelslikecoal,naturalgasandoilWhatphenomenoniscalledgreenhouseeffect?Whengreenhousegasestrapheatfromthesunandwarmtheearth.Scanningfordetails(para1-4)16/29Withoutgreenhouseeffect,whatwouldhappen?Withoutthe“greenhouseeffect”,theearthwouldbeabout33degreeCelsiuscoolerthanitis.Shouldwegetridofallgreenhousegasesifpossible?Onlyquantitiesofextracarbondioxidewillcausethetemperaturetogoup.Inthenext100years,willthetemperaturecontinuetogoup?Thetemperaturewillrisebyaslowas1-1.5,ashighas5degreesCelsius.Scanningfordetails(para1-4)17/29Whatdothescientiststhinkaboutglobalwarming?Dotheyagreewithoneanother?Scanningfordetails(para5)18/29NegativeeffectsPositiveeffectsTheeffectofGlobalwarming1.Make_____growfaster.2.______willproducemore3.Encourageagreaterrangeof_________.1.The________torise.2.Severe________________________,thespreadof_______,andthedisappearanceof________.sealevelstorms,droughts,faminesdiseasesspeciesplantsCropsanimals

Dr.Foster

HambleyScanningfordetails(para5)19/29Para6Theauthorprobablyagreesthat______actuallyglobalwarmingisgoodforman.B.weshoulddonothingabouttheglobalwarming.C.catastropheswillhappeniftheglobekeepsonwarming.D.alotremainstobefoundoutabouttheeffectsofglobalwarming.Whatisthewriter’sattitudetowardstheeffectsofglobalwarming?A.positiveB.negativeC.objectivezxxkw20/29

energy

warmer

trap

attitudes

heatEverybodybelievesthattheearthisbecoming______andthathumanactivityhascausedthisglobalwarming.Inordertoproduce_______,peoplehavetoburnfossilfuels.Duringthisprocess,“greenhouse”gasesareproduced.“Greenhousegases”can____heatfromthesunandwarmtheearthandthisphenomenoniscalled“greenhouseeffect”.Ontheonehand,weneedit.Ontheotherhand,iftherearetoomanygreenhousegases,more_____energywillbetrapped,causingglobalwarming.However,the__________ofscientiststowardsglobalwarmingaretotallydifferent.warmer

energy

trap

attitudes

heatComprehending:21/29Theearthisbecomingwarmer,inyouropinion,doesitmatter?shouldwedosomethingaboutit?DicussionsuggestionAgreementanddisagreementIstronglybelievethat…AsfarasIconcerned…You’reright.I’mafraidnot.Idoubt…22/29Whatcanwedo?↖↘↙↗solarenergy23/291.Readthetextfluently2.Finishexercise1&2onp283.Prepareareportaboutwhatindividualscandoaboutglobalwarming24/29Letussaveenergyandprotectenvironmenttogether.25/29Thankyou!26/29

Howdoeshumanactivitycausetheglobalwarming?

theburning