Unit+3+Environmental+Protection+Reading+and+Thinking+课件-2024-2025学年高中英语人教版（2019）选择性必修第三册+.pptx

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Unit+3+Environmental+Protection+Reading+and+Thinking+课件-2024-2025学年高中英语人教版（2019）选择性必修第三册+.pptx

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Unit3environmentalprotectionReadingandthinking

Knowabouttheclimatechangeandunderstandthemainideaofeachparagraph.Analysetheconsequencesofclimatechangeandenhancetheawarenessofenvironmentalprotection.TeachingObjectivesAttheendofthislesson,youwillbeableto:KeyPoint:Learnaboutthe“greenhouseeffect”and“carbonfootprint”Difficulties:Voicetheirpersonalopinionsonhowtoprotectenvironmentbyteamwork.

Lead-incutechubby“skinbones”Whatcausedthedeathofthepolarbearinyouropinion?

Readpara2forthecausesofthepolarbear’sdeathclimatechangestarvationlongerfood-seekingtravellackoffoodlowsea-icelevelThefollowingreasonsaccountforthedeathofthepolarbear,withoneinfluencinganother.Puttheminacorrectlogicalorder.Whatistherootcause（根因）?analarmingcase

Isthereanyevidencetoprovethattheclimateischanging?Readpara1Thetemperatureoftheglobalsurfaceroseabout1.2℃?from1920to2016.Theearthisbecomingwarmerandwarmer.

Theearthisgettingwarmerandwarmer.Evidenceone:_________________________________Evidencetwo:_________________________________Evidencethree:_________________________________awarmingoceanandatmospheremeltingicerisingsealevelsReadpara1Whatcausestheearthtobecomewarmer?Isthereanyevidencetoprovethattheclimateischanging?

Para34thecausesofglobalwarminganditsconsequencesDefinitionFunction/Effectnaturalgreenhouseeffectman-madegreenhouseeffectriseintemperatureextremeweathernaturaldisasterscauseseriousdamagecosthumanlivesanimallivescauseeconomiclossesthefactthatheatfromthesunenterstheatmosphereasshort-waveradiationandisreleasedbackintospaceatlongerwavelengththefactthatmoreheatfromfossilfuelsburningistrappedintheatmospheretokeepEarth’sclimatewarmandhabitable;tosustainlifetocauseEarth’ssurfacetemperaturetorisequicklyleadtoresultessentialAbigproblemconseque