人教版高中二年級(jí)下學(xué)期選必三 unit3 reading：climate change requires the world's attention課件

ByLindaUnit3ENVIRONMENTALPROTECTIONPeriod1:ReadingandThinkingDiscussClimatechange人教版

選擇性必修三Learningaims:010203Tohaveabetterunderstandingofclimatechangeandthestructureofthewholepassage.Beawareoftheimportanceofcuttingdowngreenhousegasandtakeeffectiveactionstohandleit.Thinkdeeplyabouttheproblemsofglobalwarming.BeforePre-reading:LeadinPre-reading:ThinkandtalkTodayWhathappenedtothepolarbearinthephoto?Pre-reading:ThinkandtalkCLIMATECHANGEREQUIRESTHEWORLD’SATTENTIONSkimformainidea＆texttype

1.Matchthemainideawitheachpart:Part1(para.1-2)Part2(para.3)Part3(para.4)Part4(para.5)TheevidenceofdramaticclimatechangethathadanimpactonEarth’ecologyThecausesoftheincreaseintheglobalaveragesurfacetemperatureTheeffectsoftheriseintemperatureThesolutionstoreducinggreenhousegasemissionsWhilereadingTask1Skimformainidea＆texttype

2.Whatisthestructureofthetext?A.P1

P2

P3

P4

B.P1

P2

P3

P4

C.P1

P2

P3

P4

D.P1

P2

P3

P4

Task1WhilereadingClimatechange

Evidence

SolutionsCauses

Effects

GreenhouseeffectScanandfinishthemindmapTask2WhilereadingScanPara.1-2tofinishthefollowingchartEvidence(para1-2)

Evidence

WhilereadingWehaveknownaboutclimatechangefordecades.ThereislittledoubtthatEarthisgettingwarmerandwarmer(seethegraph).Awarmingoceanandatmospherealongwithmeltingiceandrisingsealevelsprovideevidenceofadramaticchangeintheglobalclimate.Paragraph1In2013,alotofpeoplewereshockedbyanewsphotoofadeadpolarbearthatwasfoundonNorway'sArcticislandofSvalbard.Accordingtothescientistswhofounditsdeadbody,allthatremainedofthepolarbearwas"skinandbones".Anexpertwhohasstudiedpolarbearsformanyyearssaidthatfromthepositionofitsdeadbody,thebearappearedtohavestarvedanddied.Expertsclaimedthatlowsea-icelevelscausedbyclimatechangemeantthebearcouldnothuntsealsasbefore,soithadtotravelgreaterdistancesinordertofindfood.ThisalarmingcaseshowedhowtheincreaseintemperaturehadanimpactonEarth'secology.Paragraph2ScanPara.1-2tofinishthefollowingchartEvidence(para1-2)

1.awarmingoceanandatmosphere

2.meltingice3.adeadpolarbear4.lowsea-icelevelsEvidence

WhilereadingGreenhouseeffect5..greenhouseeffect7..

greenhouseeffect6.

8.ScanPara.3tofinishthefollowingchartCauses(para3)

ImpactsWhilereadingThenwhatiscausingtheincreaseintheglobalaveragesurfacetemperature?Climatescientistsoftenmentionakeyclimateprocesscalledthe"greenhouseeffect",whichhastwocommonmeanings:the"natural"greenhouseeffectandthe"man-made"greenhouseeffect.The"natural"greenhouseeffectreferstothefactthatheatfromthesunenterstheatmosphereandwarmsEarth'ssurfaceasshort-waveradiation.Theheatisreleasedbackintospaceatlongerwavelengths.Greenhousegasesintheatmosphere,suchasmethaneandcarbondioxide,trapsomeoftheheat,keepingEarth'sclimatewarmandhabitable.Withoutthisprocess,Earthcouldnotsustainlife.However,the"man-made"greenhouseeffecthasnowbecomeabigproblem.Whenpeopleproducehugeamountsofextragreenhousegasesbyburningfossilfuels,moreheatenergyistrappedintheatmosphereandcausesEarth'ssurfacetemperaturetorisequickly.Paragraph3Greenhouseeffect5..greenhouseeffect7..

greenhouseeffect6.

8.ScanPara.3tofinishthefollowingchartCauses(para3)

Impactsnatural

man-madeKeepearth’surfacewarmandhabitableTheearth’surfacetemperaturewillrisequicklyifmoreheatenergyistrappedintheatmosphereWhilereadingDrawadiagramDiagramsareveryusefultoolsthatcanbeusedtobrainstormideas,mapoutprocesses,showcauseandeffectrelationships,explainanewidea

orconceptandsoon.Whenyoureadanessayaboutscientificissues,youcantrydrawingadiagram,whichwillnotonlyallowyouvisualisetheproblemsmoreclearlybutalsocanhelpdemonstrateyourcreativethinkingandproblem-solving.ThegreenhouseeffectD.HeatenterstheatmosphereB.ReflectedsunlightEarth

AtmosphereC.Heatreflectedbacktoearth’surface

A.Heatreleasedbackintospace

A.D.C.A.B.Effects(para.4)

ScanPara.4tofinishthefollowingchartEffects9.

10.

notonly11.

.butalso12.

.extreme13.

and14.

causingdeathsandeconomiclossesWhilereadingThereisstrongandcomprehensiveevidencethattheriseintemperaturehasledtoanincreaseinextremeweatherandnaturaldisastersworldwide,notonlycausingseriousdamage,butalsocostinghumanlives.Climatescientistshavewarnedthatifwedonottakeappropriateactions,thiswarmingtrendwillprobablycontinueandtherewillbeahigherpricetopay.Infact,newsreportsarefrequentlybroadcastaboutextremerainstormsandheatwavescausingdeathsandeconomiclosses.Paragraph4Effects(para.4)

ScanPara.4tofinishthefollowingchartEffects9.

10.

notonly11.

.butalso12.

.extreme13.

and14.

causingdeathsandeconomiclossesextremeweathernaturaldisasterscausingseriousdamagecostinghumanlivesrainstormheatwavesWhilereadingSolutionsgovernmentindividuals15.16.

17.18.ScanPara.5tofinishthefollowingchartSolutions(para.5)

WhilereadingContinuedgreenhousegasemissionswillresultinfurtherwarmingandlong-lastingchangestotheglobalclimate.Thisrequirestheattentionofpeopleallovertheworld.Governmentsneedtoconsidermakingpoliciesandtakingappropriateactionsandmeasurestoreducegreenhousegasemissions.Weasindividualscanalsoreduceour"carbonfootprint"byrestrictingtheamountofcarbondioxideourlifestylesproduce.Itisourresponsibilitytoseizeeveryopportunitytoeducateeveryoneaboutglobalwarming,alongwithitscausesandimpacts,becausethisisthemostseriousissueaffectingallofusonthisplanet.Sowhatwillyoudotohelp?Paragraph5Solutionsgovernmentindividuals15.16.

17.18.ScanPara.5tofinishthefollowingchartSolutions(para.5)

makepoliciestakeappropriateactionsandmeasurestoreducegreenhousegasemissionsrestricttheamountofcarbondioxideourlifestyleproduceeducateeveryoneaboutglobalwarming,alongwithitscausesandimpactsWhilereadingClimatechange

Evidence

SolutionsCausesEffects

governmentindividualsextremeweathernaturaldisastersGreenhouseeffectnatural

greenhouseffectman-made

greenhouseeffectAbetterunderstandingofclimatechange?AfterreadingSummarize

ClimateChangeRequirestheWorld’sAttentionbyfillingintheblanks.Whatiscausingtheincreaseinthe1.

(globe)averagesurfacetemperature?Climatescientiststhinkitisthegreenhouseeffect，2.

includes“natural”and“man-made”，3.

matters.The“man-made”greenhouseeffecthasbecome4.

bigproblem.Peopleproducehugeamountsofgreenhousegasesbyburningfossilfuels，5.

(leave)mor