人教版高中英语选修6第五单元课件.ppt

选矿6，教育辅助课件，unit 5，1.tobeabletolistsomaninaturaldisasters2. tohavigeenraluderstandingaboutvolcanes3. ttownotsombasicinform morealndmorennaturaldisstersandextremeweatherareimpactionourlivers.canyoulistany？ PS PS PR？thepowerofnature、floodlightningthunderstormsandstormhuricanetornadotyphoonlandslicdeearthuketsunamiolcanicerution， 雷洪水龙卷风雷击火山喷火沙尘暴地震飓风滑坡台风therearesomewordsaboutnaturalphenomenaornaturaldisasters .matchemup . tsunami : anetarthequatechingundentheseafloor，tusingmetworesoutthenta guesswhichnaturalphenomenornaturaldisasterisbe earthquake : asuddenvioleentmovementhearths surface，sometimesscasinggretdamage，thunder storm : alotoffrainfallingquic withloudnoisesandflashesoflight，sandstorm : astormcausedbystrongwindsandblowingsandordist，flard : alotoefwaterinanareawh tornado : acolumnofailerthatturnsveryquickly，typhoon:atropicalcyclone (热带旋风) occurringinthewesternacificorindianocean， huricane : aviolentstormwithextremelystrongwindsandheavyrain，land lide : alargeamountofearthandrocksfalingdownaclifforthe volcanicerduptimes : ashsometinssingintotheairrominsidetheearth，Whatdoyouknowaboutvolcanoes？themmaeruptsfromthecter； thelavaflowssldownthemount .lava、crater、ashcloud/volcanicash、magma、pleaselookatthediagrambelow.itshowaneruptingvolcano .和therocksundertheearthbecomehotterandtoranderuptfromthemount .Moreaboutvolcano:jointsbetweentheplats.offtennneartheocans 2.fromwhywheresitmostprobableforaavolcanertupt.haleakalacrater，thelargestdormantvolcanintheworld (mai，Hawaii )，anactivevolc ThepositionoftheKilaueavolcano， letslearsomethingaboutoneofthemostactivevcanes-thekileavolcano .nowwatcapieceofvideoboutmountkilaueatoknowmoreaboutit . muntcompleationaiceihhaserupted _ _ _ times since 1952 . thecurrentuptimebeganin _ _ _ _ _ _ _ andhasbeengoingone . letsenjoysomewonderfulmomentsoftlongeruptimeon .62，1983 Hawaiiskilaeavolcanbeganeruptime 1983 withaspectaculararching.thisp 1983.geologistrspreparingtocollectsamplesnearanactiveevent (排出口) erruntinginthebackgroundatkileaeseatriftzone (断裂带) onjan.7， 1983. Anaerial (空中) viewofPuuOocrater，wherethereheoptionhasbeenoccurring，atdusk，sonafterthekileaeuptimebegan.(June 29， 1983 ) anarialviewofpuoocraterfromthesoutheastonapril 21， 1988 .anaerialviewoflaalakenpuoocrater、taken aug.30 1990.thecraterwasabout 800 feet (250米) in diameter . kilauea volcanoserruptimeondesthawaiiolcanesonationalparkswahalaisitorcenter show non thebuiltdingwassetaflame (laaonjen 22，1989.lavafromkileavolcanflowsromantubetothesearkupapaupointinhawaii.(nov.27， 1989 ) laviaenterstheocaninmay 2010 fromthekalapanafflowatkileavolcaninhawaii .ageologisttakingsampleonjuly14， 2010 fromarecentlyformedskylight (天窗) ontheQuarryflowlavatube (采石场流岩管) . Trytocompletethetable，Groupwork，haveyyouevercononsideedhowweakhumansarecomparedwithavolcana，huricanereathquake？ inyourgrouppossisswareshusmanebingsprotectthemsvellovermonpowerfulnatralforces .Groupdiscussion，p32， wecanhelplessonhedamageandslossesscausedyitthroughcombineedeffortsofrisksassessment (评价) 和early warning.westhouldddoomortortectheenvirementorotetheenterorducthenerentateductionldisasters .可