globalwarming.ppt

Welcome Wordsstudy Globalwarming Unit4 energysources Wedependonenergytodomanythingsinourdailylives Forexample energylightsourcitiesandheatsourbuildings Makealistofthingsthatuseenergyinyourhome inyourschool oranyotherplacesyoucanthinkof stove light thingsthatuseenergyinyourhome micro waveoven cassetteplayer heating television hairdryer videoplayer fridge computer washingmachine stove Windenergyisusedaspowertoproduceelectricity Windmills whereelectricityisproducedbyburningcoals Thecoalpowerstations inwhichoilisrefinedandmadepure TheOilRefineries炼油厂 afacility 设施 designedtochangenuclearenergyintoelectricity Anuclearpowerplant areusedtokeepbackwaterandraiseitslevelforirrigation 灌溉 orforproducingelectricity etc TheHydro electricdams水电站坝 Anenergysourceis renewable whensuppliesofitneverrunoutand non renewable whenonedaytheywillrunout Whichenergysourcesonyourlistarerenewableandwhicharenon renewable Discuss light heating television cassetteplayer videoplayer computer fridge stove washingmachine hairdryer coal oil naturalgas wind windpower sun solarenergy uranium 铀 water hydro electricpower plantwaste 生物质能 hotspringorgeysers 喷泉 thesea 潮汐能 non renewable non renewable non renewable renewable renewable non renewable renewable renewable renewable renewable Whatarethesebuildingsmadeofandwhatistheirpurpose Theyaremadeofglassandplantscangrowinitwhenitiscoldoutside traptheheatfromthesun keepitfromescaping warm Agreenhouse Howdoesitwork materialandusage Greenhousegases What sgreenhousegaseseffect Greenhousegasesperformthesamefunctionastheglassinagreenhouse Theytraptheheatofthesunandkeeptheairsurroundingtheearthwarm Itiscalledthegreenhouseeffect TheEarthIsBecomingWarmer ButDoesItMatter B C A D E choosethetopicsentence Para6 Para7 G F Theburningoffossilfuelsincreasestheearth stemperature B Introducethetopicofthepassage C Humanactivitycausedglobalwarming D TheburningoffossilfuelsincreasescarbondioxideE Thelevelsofcarbondioxidehaveincreasedgreatly F differentattitudesamongscientistsG Nooneknowswhattheeffectsofglobalwarmingwillbe Fastreading Matchthepartswiththemainideas part1 para1 part2 para2 5 part3 para6 part4 para7 Explainhowglobalwarmingcomesabout Introducethetopicofglobalwarming It suptoreaderstothinkanddecidewhetherpeopleshoulddosomethingaboutglobalwarmingornot Listtwodifferentattitudesamongscientiststowardsglobalwarming Itis thathascausedthisglobalwarming Besides theincreaseinthetemperatureisalsodueto somebyproductsofwhichiscalled themostimportantoneofwhichis Weneed tokeeptheearthwarmenough but maycausetheglobaltemperaturetogoup Howhastheglobalwarmingcomeabout humanactivity burningoffossilfuels greenhousegases carbondioxide smallamountsofgases hugequantitiesofextracarbondioxide Para2 3 Detailedreading Whatarethetwographsabout Graph1showsthetemperatureincreaseofonedegreeFahrenheitbetween1860to2000 Graph2showsthecarbondioxidecontentintheatmospherefrom1957to1997 Graph1 Graph2 3 ThedifferentideasbetweenDr JaniceFoster GeorgeHambley goup catastrophe veryserious positive produce agreaterrangeofanimals Para6 4 Whataretheeffectsofglobalwarming negative 1 Thesealevel 2 Severe thespreadofdiseases andthedestructionofspecies istorise storms droughts floods famines 1 Thetemperaturelastcenturydidn tincreasemuch 2 Itisbelievedthatglobalwarmingiscausedbytheactivitiesofhumans 3 Allscientistsbelievethatglobalwarmingiscausedbyburningfossilfuels 4 GeorgeHambleyisworriedabouttheeffectsofcarbondioxideonplantgrowth 5 Itisclearwhattheeffectsofglobalwarmingwillbe Arethesestatementstrueorfalse T T T F F listening 1 Whofoundouttheamountofcarbondioxideintheatmospherefrom1957to1977 A Dr JaniceFoster B CharlesKeeling C GeorgeHambley D SophieArmstrong Listentothereadingpassageanddosomechoices 2 Buttherearesomeverydifferentattitudesamongscientiststowardsthisissue issue heremeansthesameastheonein A Iboughtthenewstampthedayofitsissue B Theyaretalkingaboutoneofthekeyissuesintheelectioncampaign C Thegovernmentisexpectedtoissueastatementabouttheelection D Themagazinehas12issueseachyear 3 Theauthorprobablyagreesthat A actuallyglobalwarmingisgoodforman B weshoulddonothingabouttheglobalwarming C catastropheswillhappeniftheglobekeepsonwarming D alotremainstobefoundoutabouttheeffectsofglobalwarming discussion Whatcanwedotocontroltheglobalwarming greenthesurroundingsandprotecttheforests usemorerenewableenergy rareplants r