the-earth-is-becoming-warmer选修6-第4单元课件.ppt

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1、greenhouseeffectgasesglobalwarmingTheEarthIsBecomingWarmer---ButDoesItMatter?TheEarthIsBecomingWarmerTellthefactaboutglobalwarming---ButDoesItMatter?comparedifferentideasPredictReadtheopeningparagraph1.Whowrotethearticle?2.Whatisthenameofthemagazine?Skimmi

2、ng3.Whatisthetopicsentenceofthetext?Sohowhasthiscomeaboutanddoesitmatter?Theprocessofhowglobalwarmingdevelopsandpeople'sdifferentattitudesaredeclaredinthetext.1.Para2-4howhasthiscomeaboutCarefulreading1.WhatisGraph1about?Thelargerthetemperaturedifference,t

3、hemoreheatistransferred.conclusion:theearthisbecomingwarmerrandomphenomenonnaturalphenomenonCarefulreading2.reason?theburningoffossilfuelsbyproductgreenhousegasescarbondioxidePara3Carefulreading3.greenhouseeffect?Para3Carefulreading4.What'stheproblem?hugeq

4、uantitiesofextracarbondioxidemoreheatenergytendstobetrappedtheglobaltemperaturetogoupPara3Carefulreading1.WhatisGraph2about?Conclusion:thelevelsofCO2haveincreasedgreatlyresultintheburningoffossilefuelsoverthenext100yearsaslowas1to1.5degreeCelsiusashighas5d

5、egreeCelsius2.Para2-4howhasthiscomeaboutdifferentattitudesCarefulreadingDrJaniceFosterGeorgeHambleyThe_____thatthetemperatureincreasesbyfivedegreeswouldbea___________anditcouldbevery_______.trendseriouscatastropheAnywarmingwillbe____withfewbad_____________

6、________________.Itisactuallya________thing.mildenvironmentalpositiveconsequencesCarefulreadingcatastrophe♫ariseofseveralmetersinthesealevel♫severestorms,floods,faminesthespreadofdiseasesdisappearanceofspeciesCarefulreadingpositive♫encourageagreaterrangeof

7、animals♫makeplantsgrowquickermakecropsproducemoreCarefulreadinggreenhousegasesbuildupEvenifwestart...,theclimateisgoingtokeeponwarming.Para6书本27页练习2Title______________________________________________Theopeningpara.:raisingaquestiongraph2Para2,3:___________

8、_______________________Para4,5______________Para6:conclusiongraph1Theearthisbecomingwarmer-Butdoesitmatter?causesGivingexamples,usinggraphs,explanation.differentattitudesDiscussionWeshouldstartfromeverylittle