选修6unit4-Global warming-reading.ppt

Unit4GlobalWarmingTheEarthIsBecomingWarmerButDoesItMatter?,主讲人：,Workingroups-listthingsasrequired:1.Thingsthatconsumeenergyaroundusoratanyotherplaces.,2.Sourcesofenergy,WarmingupI(m),Thingsthatuseenergy,Inahouse,lightstelevisioncassetteplayercomputerfridgestovewashingmachinehairdryervideorecorder,coaloilnaturalgaswind(power)sun(solarenergy)water(hydro-electricpower)thesea(tidalenergy)uranium(nuclearenergy)plant(biomassenergy),Windmills,renewable.,What?Renewable?,WarmingupP25,What?Renewable?,Acoalpowerstation,non-renewable.,What?Renewable?,Anoilrefinery(精炼厂),non-renewable.,What?Renewable?,Anuclearpowerstation,non-renewable.,solarpanelsrenewable,What?Renewable?,What?Renewable?,Ahydro-electricdam,renewable.,Geothermal(地热的)EnergyPlant,Whatisthegreenhousemadeofandusedfor?,Whatisthis?,Thesun.,Greenhouse,Howdoesitwork?Theairinsideiswarmbecausetheglasstrapstheheatfromthesunandkeepsitfromescaping.Thismakesthegreenhouseheatupandsotheplantscangrowthroughoutthecoldperiod.,Questions,Whatisgreenhouseeffect?,greenhouseeffect,Carbon-dioxide,Theleadinggassesare:Carbon-dioxideMethaneOzone(O3)NitrousOxide(N2O),Whichgreenhousegasesdoyouknow?,Astheearthisbecomingwarmer,therearemanydisasters.,tsunami,Theriseofthesealevel,floods,snowdisaster,famines,thespreadofdiseases,droughts,Listentothetapeandfindoutthemainideaofthepassage:,Reading,Part1(Paragraphs1)Part2(Paragraphs2-5)Part3(Paragraphs6),Introduceadebateovertheissueofglobalwarming.,Describehowglobalwarmingcomesabout.,Listtwodifferentattitudesamongscientiststowardsglobalwarming.,Part4(Pa7),Itsuptoreaderstothinkanddecidewhetherpeopleshoulddosomethingaboutglobalwarmingornot.,Choices.,1.Whofoundouttheamountofcarbondioxideintheatmospherefrom1957to1977?A.Dr.JaniceFoster.B.CharlesKeeling.C.GeorgeHambley.D.SophieArmstrong.,B,ReadingIV(3m),2.Theauthorprobablyagreesthat_A.actuallyglobalwarmingisgoodformankind.B.weshoulddonothingabouttheglobalwarming.C.catastropheswillhappeniftheglobekeepsonwarming.D.alotremainstobefoundoutabouttheeffectsofglobalwa