选修6 Unit4 Global Warming全单元课件.ppt

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1、Unit3GlobalWarmingWhatisenergy?Whatdoweuseitfor?heat,light,power,etc.Wheredoestheenergycomefrom?SourcesofenergyRenewable?Non-Renewable?Energyisnecessaryinourlife.Sourcesofenergyareendless,sowedon’thavetoworryaboutit.Thereisnotroublecausedwhenweproduceenergyfromthesources.Wecansw

2、itchtoothersourcesofenergyifoneisrunout.Doyouagree?Whatisgreenhouse?Whatdoesitdo?Whereelsedowesee“greenhouse”effect?THEEARTHISBECOMINGWARMER—BUTDOESITMATTER?INTRODUCTION:Author____________Magazine___________________Problemdiscussed________________Whatquestionswilltheauthorexplo

3、res?SophieArmstrongEarthCareGlobalwarmingHowhasitcomeabout?Doesitmatter?Para1-4Para5-6Part1:Howhasitcomeabout?Para1Para2Para3Para4Howhasthetemperatureincreased?Whohasdoneit?HowhastheCo2developed?WhathascauseditthetopicsofeachparagraphWhohasdoneit?Whathascausedit？HowhastheC02devel

4、oped?Howhasthetemperatureincreased?HumansBurnfossilfuelsenergy“greenhouse”gasesTrapheatfromthesunTheearthgetswarm“Greenhouse”EffectTrueorFalseGreenhouseeffectdoesdamagetotheearthbywarmingitup.Greenhouseeffectisduetohumanactivities.Humansmakethegreenhouseeffectmoreseriousandtheref

5、orecauseglobalwarming.FFTHow?Whatresearcheshavebeendone?Abouttheresearches:Whataretheresultsofeachresearch?Aretheyrelated?How?Whatthefuturetemperaturewillbelike?CO₂℃/℉CO2wentup.Temperatureincreased.Theyarepositively/directlyrelated.Itisuncertainyet.Part2:Doesitmatter?Negativeeffe

6、ctsPredictor_______________temperatureincrease(maybeby____degree.)Leadto__________A_________futurePositiveeffectsPredictor_______________warming;____________environmentalconsequence;A________futureJaniceFoster5acatastropheGeorgeHambleymildWithfewbadPositive/bettergreatNegative/wo

7、rseThinkingafterreading:Whichideadoyoubelieveaboutglobalwarminganditseffects?Why?Isthereanythingwecandoaboutglobalwarming?Ifthewarmingseemshardtoslowdownnomatterwhatwedo,willyoukeeponsavingenergyorreduceCO2?Filmsrecommended:<>难以忽视的真相<>愚蠢年代<

8、egreatglobalwarmingswindle>>全球变暖大骗局Usefu