高二英语选修6第四单元课件

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1、Unit4GlobalwarmingPeriod172Warmingupandreading1课件（人教课标选修6）Unit4GlobalWarmingPeriod1&2WarmingupandReadingIWorkingroups---listthingsasrequired:1.Thingsthatuseenergyaroundusoratanyotherplaces,(ie.light)2.Sourcesofenergy(ie.coal)Warmingup–I(３m)Thingsthatuseenergyar

2、oundusoratanyotherplaces:InahouseThingsthatuseenergySourcesofenergylightstelevisioncassetteplayercomputerfridgestovewashingmachinehairdryervideorecordercoaloilnaturalgaswind(power)sun(solarenergy)water(hydro-electricpower)thesea(tidalenergy)uranium(nuclearenerg

3、y)plantwaster(biomassenergy)Windmills,renewable.What?Renewable?Warmingup–II(5m)What?Whatkind?Renewable?Acoalpowerstation,non-renewable.What?Whatkind?Renewable?Anoilrefinery(精炼厂),non-renewable.What?Whatkind?Renewable?Anuclearpowerplant,non-renewable.What?Whatkin

4、d?Renewable?Ahydro-electricdam,renewable.Guessit!UraniumOre(铀矿石)Theelementuraniumdoesnotoccurinpureforminnaturebutisfoundinmineralssuchascarnotite（钒钾铀矿),picturedhere.Whatsourceofenergy?Geysers(间歇泉)Geothermal(地热的)EnergyPlantCoalOilNaturalgasUraniumWind(windpower

5、)Sun(solarenergy)Water(hydro-electricpower)Plantwaste(biomassenergy)Hotspringsorgeysers(geothermalenergy)Thesea(tidalenergy)FossilfuelsNon-renewableRenewableWhatarefossilfuels?Ancientanimalandplantmaterialbelowthesurfaceoftheearthwithahighcarboncontent,suchasco

6、al,oilandnaturalgas,whichcanbeburnttoproduceenergy.Alsoknownasnon-renewableenergybecauseoncetheyareusedtheyhavegoneforever;theycannotberenewed.Whatabouttheweather?9℃/14℃Weneed…Pre-reading(3m)ThesunHowabouttheplants?Iflackofsolarenergy,theplants…GreenhouseGreenh

7、ousegases!Whataregreenhousegases?What’sgreenhouseeffect?Let’sseethefollowingpictureaboutit.Theearthisbecomingwarmer—butdoesitmatter?ReadingReadthepassageagaintofindouttheanswerstothequestionsinEx.1ReadingI–scanning(5m)1.Whowrotethemagazinearticle?Whatisthenameo

8、fthemagazine?2.Whatarethenamesofthethreescientistsmentionedinthearticle?SophieArmstrong.EarthCare.DrJaniceFoster,ChrlesKeeling,GeorgeHambley.3.Whatdotheythinkaboutglobalwarm