人教版高中英语选修六第五单元第一课时warming up PPT课件.ppt

,Thepowerofnature,Unit5,NewWords,Wordsreview,diagramvolcanoerupteruptionashhurricane,n.图解;图表;示意图n.火山vi.(指火山)爆发;突然发生n.火山爆发;(战争等)爆发n.灰;灰末n.飓风;风暴,Doyouknowanyothernaturaldisastersshowingthepowerofnature?Pleaseworkwithyourpartnersandmakealistofnaturaldisasters.,Typhoon,Sandstorm,Flood,Earthquake,Tornado,Snowstorm,Tsunami,Landslide,Volcano,Hurricane,Thepowerofnature,Flood,Earthquake,Namethenaturaldisastersaccordingtothepicturesbelow.,Typhoon,Typhoon/Hurricane,Tornado,Landslide,Tsunami,Sandstorm,Volcano,Haveyoueverseenavolcano?,Doyouknowsomefamousvolcanoesintheworld?,TheKilaueavolcanoinHawaiiisperhapsthemostactivevolcanointheworld;itisrecordedthattheresaneruptionalmosteveryfouryears.,2004年6月2日，夏威夷的基拉韦厄活火山(Kilaueacaldera)喷出熔岩。,2008年3月18日，夏威夷基拉韦厄(Kilauea)火山喷发，火山灰从出口向外喷散。火山喷发产生的岩屑散布于方圆30公顷，一处深受游客喜爱的观景台也受到岩屑的影响。这是海拔1277米的基拉韦厄火山主火山口自从1924年以来的首次喷发。,素有“欧洲最高的活火山”之称的意大利西西里岛埃特纳火山(MountEtna)，海拔3340米。2002年10月30日，国际空间站上的工作人员观察到埃特纳火山的爆发过程。山的下坡和山顶北边颜色较淡的烟柱，是由熔岩流入山坡上的松树林引起的森林大火造成的。,Pleaselookatthediagrambelow.Itshowsavolcanoerupting.,volcanoeruption,Boilingrockeruptsfromthecrater;thelavaflowsslowlydownthemountain.,Magmachamber,Lava,Crater,Ashcloud/volcanicash,Anactivevolcano,Whattypesofvolcanoesdoyouknow?,Adormantvolcano,Anextinctvolcano,Letswatchtwovideos(视频)aboutvolcano!,Canyouimagineclimbingintoalivevolcanoinordertomeasurethetemperatureoftheboilingrockinside?,imagine,Canyouimaginedoingsuchdangerousworkaspartofyourjob?,Anaturaldisasterlikehurricanes,earthquakesoreruptionofvolcanoes,affectshumanactivities.Thoughwecandonothingtopreventanaturaldisaster,wecanhelplessenthedamagesandlossescausedbyitthroughcombinedeffortsofriskassessment(评估)andearlywarning.,Haveyoueverthoughtabouthowpowerfulnat