人教选修6Unit4GlobalwarmingVIP专享VIP免费

Unit4GlobalWarmingSavetheearth!Workingroups---listthingsasrequired:1.Thingsthatuseenergyaroundusoratanyotherplaces,(ie.light)2.Sourcesofenergy(ie.coal)Warmingup–I(３m)Thingsthatuseenergyaroundusoratanyotherplaces:InahouseThingsthatuseenergySourcesofenergylightstelevisioncassetteplayercomputerfridgestovewashingmachinehairdryervideorecordercoaloilnaturalgaswind(power)sun(solarenergy)water(hydro-electricpower)thesea(tidalenergy)uranium(nuclearenergy)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?Whatkind?Renewable?Ahydro-electricdam,renewable.Guessit!•UraniumOre(铀矿石)•Theelementuraniumdoesnotoccurinpureforminnaturebutisfoundinmineralssuchascarnotite（钒钾铀矿）,picturedhere.Whatsourceofenergy?•Geysers(间歇泉)Geothermal(地热的)EnergyPlant•Coal•Oil•Naturalgas•Uranium•Wind(windpower)•Sun(solarenergy)•Water(hydro-electricpower)•Plantwaste(biomassenergy)•Hotspringsorgeysers(geothermalenergy)•Thesea(tidalenergy)FossilfuelsNon-renewableRenewableWhatarefossilfuels?•Ancientanimalandplantmaterialbelowthesurfaceoftheearthwithahighcarboncontent,suchascoal,oilandnaturalgas,whichcanbeburnttoproduceenergy.Alsoknownasnon-renewableenergybecauseoncetheyareusedtheyhavegoneforever;theycannotberenewed.Whatabouttheweather?9/14℃℃Weneed…Pre-reading(3m)Thesun.Howabouttheplants?Iflackofsolarenergy,theplants…GreenhouseGreenhousegases!•Whataregreenhousegases?•What’sgreenhouseeffect?Let’sseethefollowingpictureaboutit.GlobalWarmingReadingReadthepassageagaintofindouttheanswerstothequestionsinEx.1ReadingI–scanning(5m)1.Whowrotethemagazinearticle?Whatisthenameofthemagazine?2.Whatarethenamesofthethreescientistsmentionedinthearticle?→SophieArmstrong,EarthCare.→DrJaniceFoster,CharlesKeeling,GeorgeHambley.→Therearesomeverydifferentattitudesamongscientiststowardsthisissue.Somethinktheeffectswillbeterrible,whilesomeothersbelievethatweshouldnotworryaboutit.3.Whatdotheythinkaboutglobalwarming?Dotheyagreewithoneanother?→ThefirstgraphshowsthetemperatureincreaseofonedegreeFahrenheitbetween1860to2000.Thesecondgraphshowsthecarbondioxidecontentintheatmospherefrom1957to1977.→Globalwarming/thewarmingoftheearth4.Whatarethetwographsabout?5.Whatisthemaintopicofthearticle?Readthepassagecarefullyandjudgewhetherthestatementsaretrueorfalse?1.Thetemperaturelastcenturydidn’tincreasemuch.2.Everyonebelievesthatglobalwarmingiscausedbytheactivitiesofhumans.FFReadingII-skimming(5m)3.Carbondioxideisabyproductofburningfossilfuels.4.PeopleacceptCharlesKeeling’sdatabecausehetookaccuratemeasurements.5.Floodingcouldbeoneoftheeffectsoffutureglobalwarming.6.GeorgeHambleybelievesscientistsarejustguessingabouttheeffectsofglobalwarming.TTTT7.GeorgeHambleyisworriedabouttheeffectsofcarbondioxideonplantgrowth.8.Itisclearwhattheeffectsofglobalwarmingwillbe.FFMainideasofeachpartWritingtechniquesPart1:introduce_________________________________________________Raising_________Part2:illustrate_______________________________giving____________using____________Part3:list_______________________________________giving__________,making________Part4:It’suptoreaderstothinkanddecide________________________________Using_______...