2023学年完整公开课版Unit4Globalwarming教学

Unit4GlobalwarmingThegraphshowsthattheearthisbecoming________between1880and2000.Thetemperature_________and________overthisperiod.Butonthewholeit________byonedegreeFahrenheit.Duringthistime,theearthreachedits________temperatureinabout1910andits______in2000.Therewasa________increaseinthetemperatureduringthetwentyyearsafter1980.warmerincreaseddecreasedincreasedlowesthigheststeadyThingsthatuseenergyTV,air-conditionerfridgelightcomputer,car,buswashing-machinemicrowaveheatingcooker………

windpoweracoalpowerstationanuclearpowerStation核电站ahydroelectricdam

水坝Sourcesofenergy

Sourcesofenergy

*coal*water*nuclearenergy*wind

renewable//non-renewablenon-renewablerenewablenon-renewablerenewablerenewablenon-renewablenon-renewable

sunnaturalgasoil

greenhousetrapkeep……frommake……warmgrowbetter.glassgrowingplantsHowdoesthegreenhousework?

carbondioxidemethanewatervaporgreenhousegasesThegraphshowstheamountof_______________intheatmosphere________steadilyoverabout30years.Carbondioxide

increased

Howhasglobalwarmingcomeabout?humanactivityburningfossilfuelsgreenhouseeffectgreenhousegases

weneedthosegasesaddhugeextradioxideglobaltemperaturegoesup(carbondioxidemethanewatervapor)1234567Theearthisbecomingwarmer--Butdoesitmatter?Unit4readingReadthetitleandtheparagraphbelowit,thenanswerthequestions.Whowrotethemagazinearticle?2.Whatisthenameofthemagazine?3.Whattopicwillbediscussed?SophieArmstrongEarthCareHowhasglobalwarmingcomeaboutanddoesitmatter?TrueorFalseThetemperaturelastcenturydidn’tincreasemuch.()2.Everyonebelievesthatglobalwarmingiscausedbythehumanactivities.()3.Naturalgasisagreenhousegas.()4.Carbondioxideisabyproductofburningfossilfuels.()5.Floodcouldbeoneoftheeffectsoffutureglobalwarming.()6.Itisclearwhattheeffectsofglobalwarmingwillbe.()FFFTTFincreased1℃Noteveryoneisn’tNooneknows

Whatcanwedoaboutglobalwarming?Dicussion4agroupaleaderawriterareporterIfyou’renotusingthelights,theTV,thecomputerandsoon,turnthemoff.Ifyou’recold,putonmoreclothesinsteadofturninguptheheat.Ifyoucan,walkorrideabike.Ifyoucan,buythingsmadefromrecycledmaterials.Getyourparentstobuyproductsthataremadetosaveenergy.Planttressinyourgarden,theycanabsorbcarbondioxide.Themostimportant:tellyourfriendsaboutglobalwarmingwehavelearnedtoday.Goodsuggestionsaboutglobalwarming

Let’ssaveenergyandprotectenvironmenttogether