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Unit6GlobalwarmingCanyoutellwhatweuseenergyfor?EnergylightsourcitiesEnergyheatsourbuildingsEnergyentertainsus(watchingTV;playingcomputeretc.)…•Wheredoesalltheenergycomefrom?Windmills风力acoalpowerstation燃煤发电站anoilrefinery炼油厂anuclearpowerplant原子能发电站太阳能接受器Solarpanelsahydrodam水坝What’sthedifferencebetweenwindpowerandcoalpower?Windwillneverrunoutwhilecoalisalimitedsource.Whatisrenewableenergyandwhatisnon-renewableenergy?TrytotellasmanyaspossibleThingsthatuseenergySourcesofenergyRenewable/Non-renewablelightsheatingtelevisioncassetteplayercomputerfridgewashingmachinehairdryer…coalNon-renewableoilNon-renewablewindNon-renewablenuclearNon-renewablesunrenewablewaterrenewable(hydroelectricpower)(solarenergy)PlantwasterenewablehotspringcfrenewablenegativeeffectsofusingenergyIncreasingCO2pollutionglobalwarmingPre-reading:Lookatthepictureandanswerquestions:Pre-readingWhatisitinthepicture?It’sagreenhousemadeofglass.Whatisitusedfor?It’susedforgrowingplants,especiallyduringcoldweather.Howdoesitwork?Theairinsideiswarmbecausetheglasstrapstheheatfromthesunandkeepsitfromescaping.Thismakesthegreenhouseheatupandsotheplantscangrowthroughoutthecoldperiod.Whatisgreenhousegases?Thegasessurroundingtheearth,includingcarbondioxide,methaneandwatervapor.Whatdoyouthinkgreenhousegasesdo?Theytrapheatfromthesunandthereforewarmtheearth.Reading:Theearthisbecomingwarmer—butdoesitmatter?greenhouseeffectFast-reading:1.WhichofthefollowingisTRUEaccordingtothetext?A.ThetemperatureoftheearthincreasedaboutonedegreeFahrenheitduringthe20thcentury.B.Thecarbondioxidecontentintheairincreasedby70partspermillionfrom1957to1997.C.Allscientistsacceptthedataingraph2exceptCharlesKeeling.D.JaniceFostersaysthatmorecarbondioxidewillmakeplantsgrowfaster.2.WhichofthefollowingisDrJaniceFoster’sopinion?A.Theresultofthetemperatureincreasewillbeserious.B.Theamountofwarmingisnothingserious.C.Weneedn’tworryabouthighlevelsofcarbondioxide.D.Globalwarmingisanaturalphenomenon.Comprehending浓度单位•Answerthequestions:1.Whowrotethemagazinearticle?Whatisthenameofthemagazine?SophieArmstrong.EarthCare.2.Whatarethenamesofthethreescientistsmentionedinthearticle?Dr.JaniceFoster,CharlesKeeling,GeorgeHambley.3.Whatdotheythinkaboutglobalwarming?Dotheyagreewithoneanother?Theydon'tagreewitheachother.Dr.JaniceFosterthinks____________________________________________globalwarmingcouldbeveryserious.theeffectsofGeorgeHambleythinks________________________________________________________________________________________________CharlesKeelingbelieves________________________________________________________________________________________________________globalwarmingwillbemildwithfewbadenvironmentalconsequences.itistheburningofmoreandmorefossilfuelsthatisresultinginabigincreaseincarbondioxide.4.Whatarethetwographsabout?GraphIshowsthetemperatureincreaseofonedegreeFahrenheitbetween1860to2000.Graph2isaboutthecarbondioxidecontentintheatmosphere,1958--1990.5.Whatisthemaintopicofthearticle?Globalwarming/thewarmingoftheearth.Shouldwedonothingaboutglobalwarming?Debate:Homework: