U4P1Warmingupandreading.ppt

Globalwarming Unit4 Whatcausestheglobalwarming Humanactivityorarandombutnaturalphenomenon Thinkabout Whenwetalkaboutthisproblem wenaturallylinkittotheuseofenergyandtheenvironmentalpollution Butfirstlyandimportantly energymakesagreatdifferencetoourlives Whatthingsdoweuseenergyfor Thingsthatuseenergyaroundusoratanyotherplaces Wheredoesallthisenergycomefrom Fromthefollowingpictures youwillknowwhereallthisenergycomesfrom windmills acoalpowerstation anoilrefinery anuclearpowerplant solarpanels ahydro electricdam Fossilfuel 化石燃料 Ancientanimalandplantmaterialbelowthesurfaceoftheearthwithahighcarboncontent suchascoal oilandnaturalgas whichcanbeburnttoproduceenergy alsoknownasnon renewableenergybecauseoncetheyareusedtheyhavegoneforever theycannotberenewed Whatarefossilfuels Samplelists lightheatingtelevisioncassetteplayervideorecorder oil coal naturalgas wind windpower sun solarenergy renewable renewable non renewable non renewable non renewable fridge stove washingmachine hair dryer water hydro electric renewable plantwaste biomassenergy renewable hotspringsorgeysers geothermalenergy renewable thesea tidalenergy renewable computer uranium nuclearenergy non renewable Renewableornon renewable Renewableornon renewable Whatistoldinthepicture coal oil naturalgas Why FossilFuel Agreenhouse Agreenhouseismadeof andisusedforgrowing especiallyduring weather Whatisagreenhousemadeofandusedfor glass plants cold Theairinsideiswarmbecausetheglasstrapstheheatfromthesunandkeepsitfromescaping Thismakesthegreenhouseheatupandsotheplantscangrowthroughoutthecoldperiod Howdoesagreenhousework Nowcanyouconnectglobalwarmingwithgreenhouseandthinkoftherelationshipbetweenthem Maybeyoucanunderstandwhywecallglobalwarming greenhouseeffect ThegreenhouseeffectisanaturallyoccurringprocessthataidsinheatingtheEarth ssurfaceandatmosphere Itresultsfromthefactthatcertainatmosphericgases suchascarbondioxide watervapor andmethane areabletochangetheenergybalanceoftheplanetbyabsorbinglongwaveradiationemittedfromtheEarth ssurface Withoutthegreenhouseeffectlifeonthisplanetwouldprobablynotexist 低碳生活 low carbonlife 低碳生活 low carbonlife 就是指生活作息时所耗用的能量要尽力减少 从而减低碳 特别是二氧化碳的排放量 从而减少对大气的污染 减缓生态恶化 主要是从节电节气和回收三个环节来改变生活细节 Saveenergy Protecttheearth Wordsstudy Unit4Reading THEEARTHISBECOMINGWARMER BUTDOESITMATTER Youcanoftengetanideaofwhatamagazinearticleisaboutbyglancingatthetitle thefirstparagraph thediagrams andtheenlargedquotes AUsefulSkill Skimmingtogetanoverviewofthestructureofamagazinearticle What sthetopicandhow sthetextorganized It saboutglobalwarming Ithasatitle afirstparagraph themaintextin2columns graphs quotes skimming ReadingComprehensionI 1 Thepurposeofthe1stparagraphisto introducethewriterB explainachangeC introducethetopicD raiseaquestion2 Thegraphsareusedto illustratepointsbyprovidingevidencetellthechangeoftemperaturetellthecontentofcarbondioxideintheairinterestthereaders ReadingComprehensionII Readthepassagequicklytofindthemainideaofeachpart Paragraph11 Paragraphs5 10 Paragraphs2 4 Paragraph1 Paras2 4 Para1 Introduceadebateovertheissueofglobalwarming Raisingaquestion Illustratehowglobalwarmingcomesabout Givingexamples usinggraphs explanation Paras5 10 Listtwodifferentattitudesamongscientiststowardsglobalwarming Givingexamples makingcontrast 对比 对照 Para11 It suptoreaderstothinkanddecidewhetherpeopleshoulddosomethingaboutglobalwarmingornot Usingaquestion leavingreaderstothinkovertheissue Trueorfalse P27 ReadingComprehensionIII 2 Thetemperatureinthelastcenturydidn tseemtoincreasemuch 2 Everyonebelievesthatglobalwarmingiscausedbytheactivitiesofhumans 3 JaniceFosterbelievesshecanmeasurethefutureglobalriseintemperature 4 Theriseincarbondioxideiscausingasteadyincreaseinglobalwarming 5 GeorgeHambleybelievesthatglobalwarmingwilldogoodratherthanharmtotheearth 6 Itisclearwhattheeffectsofglobalwarmingwillbe 1 Greenhousegasesreferto carbondioxideB theburningoffossilfuelsC byproductsoftheburningoffossilfuelsD coal naturalgasandoil2 Greenhouseeffect A isanaturalphenomenonB happenswhenthere stoomuchcarbondioxideC doesgreatharmtohumanbeingsD makeslifeforhumanbeingsbetter scanning ReadingComprehensionIV 3 foundouttheamountofcarbondioxideintheatmospherefrom1957to1977 A Dr JaniceFosterB CharlesKeelingC GeorgeHambleyD SophieArmstrong4 WhichofthefollowingstatementsisTrue Burningfossilfuelscausestheglobalwarming B Wewillhavemorefoodwithglobalwarming C Globalwarmingmeansdisasterstohumans D Moregreenhousegaseswillgatherintheatmosphere ThedifferentideasbetweenDr JaniceFoster GeorgeHambley goup catastrophe veryserious positive producemore agreaterrangeofanimals Summary Whathaveyoulearntfromthetext Trytotalkingeneraltermsrather