新人教选修六 Unit 4 Global warmingReading课件.ppt

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1、Unit4GlobalwarmingTheearthisbecomingwarmer-butdoesitmatter?Wedependonenergytodomanythingsinourdailylives.Canyoumakealistofsourcesofenergy?Warmingup:coalWaterpowerFossiloilpetrolSolarenergyWindpowerWindmill风车undergroundheat地热大亚湾核电站NuclearenergyWhichsourceiscleanerorhealthier?Whichsou

2、rceis“renewable”?Discussion:Coaloilwindsunnuclearwaterundergroundheat√√√√√√√√Doyouknowwhatitis?Agreenhouse!Whatisitusedfor?Pre-reading:Whatkeepstheearthwarm?Theearth’satmosphereWhathappentoourairnowadays?Fastreading:★Whowrotethearticle?What‘sthenameofthemagazine?★Whatarethenamesofth

3、ethreescientistsmentionedinthearticle?★Whatarethetwographsabout?★Dividethepassageintofourpartsandwritedownthemainideaofeachpart?(pairwork)Fastreading:★Whowrotethearticle?What‘sthenameofthemagazine?★Whatarethenamesofthethreescientistsmentionedinthearticle?★Whatarethetwographsabout?So

4、phieArmstrong.EarthCare关爱地球.DrJaniceFoster,CharlesKeeling,GeorgeHambley.ThefirstgraphshowsthetemperatureincreasedbyonedegreeFahrenheitbetween1860and2000;Thesecondshowsthecarbondioxidecontentincreasedfrom1957to1997.MainideasofeachpartPart1(1)Thebackgroundofthisarticle.Part2(2-5)Expla

5、nationabouthowglobalwarmingcomesabout.Part3(6)Twodifferentattitudesamongscientiststowardsglobalwarming.Part4(7)Twochoicesofdealingwiththisproblem.Detailedreading:(useyourownwords)NameIdeasaboutglobalwarmingDrJaniceFosterCharlesKeelingGeorgeHambleyIdeasaboutglobalwarming1)Carbondioxi

6、dehascausedtheglobaltemperatureto__________.2)Anincreaseoffivedegreeswouldbea___________andcouldbe_____________.DrJaniceFostergoupcatastropheveryseriousIdeasaboutglobalwarmingGeorgeHambleyMorecarbondioxideisa__________thing,whichmakescrops__________moreandwillencourage______________

7、________________.positiveproduceagreaterrangeofanimalsIdeasaboutglobalwarmingCharlsKeelingThecarbondioxidecontentoftheatmospherewentupfrom315partstoaround370partspermillion.Finishcomprehendingexercise2!Checktheanswers:Comprehending:TTFTTFWhataretheeffectofglobalwarming?Thesealevelto

8、rise海水上涨Severestorm