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Unit8NaturalDisastersInthisunityouwill:1.learnthatdisastersoccurinmanyforms,andwehumanscantakemeasurestopreventthem;2.familiarizeyourselfwiththewordsandexpressionsrelatedtothethemeoftheunit;3.learntousethesewordsandexpressions;4.learnnewslisteningstrategiesconcerningthelexicalfeaturesofnewsreports;5.practicelisteningwithothernon-theme-relatedaudioandvideomaterials;6.learntousetheproperexpressionsandsentencestructurestomakecomplaintsLearningobjectivesPartITheme-RelatedActivitiesPartIIListeningStrategyPartIIIExtensiveListeningPartIVCommunicationSkillsPartVAssessmentLogPartITheme-RelatedActivitiesSectionILectureSectionIIScienceReportSectionIIIScienceReport1.Canyounamesomenaturaldisasterswehaveeveryyear?2.Canyougiveanexampleofonememorablenaturaldisasterthathappenedinthepast?Lead-inquestions:Unit8》PartI》SectionI》Lead-inquestionsWordBankstall/stɔːl/v.使熄火；使失速plume/pluːm/n.羽状物（如烟云,雪尘等）；火山灰erupt/ɪˈrʌpt/v.爆发geologist/dʒɪˈɒlədʒɪst/n.地质学家USGeologicalSurvey美国地质调查局hazard/ˈhæzəd/n.危险；危害物seismic/ˈsaɪzmɪk/adj.地震的eruption/ɪˈrʌpʃən/n.爆发code/kəʊd/v.编码Unit8》PartI》SectionI》WordBankUnit8》PartI》SectionI》WordBankphase/feɪz/n.阶段lava/ˈlɑːvə/n.熔岩；火山岩浆avalanche/ˈævəlɑːnʃ/n.雪崩debris/ˈdebriː/n.岩屑；瓦砾NotesUnit8》PartI》SectionI》NotesTheUnitedStatesGeologicalSurvey(USGS)ItisascientificagencyoftheUnitedStatesgovernment.ThescientistsoftheUSGSstudythelandscapeoftheUnitedStates,itsnaturalresources,andthenaturalhazardsthatthreatenit.Theorganizationhasfourmajorsciencedisciplines,concerningbiology,geography,geology,andhydrology.TheUSGSisafact-findingresearchorganizationwithnoregulatoryresponsibility.Task1Watchthevideoclipandthendecidewhetherthefollowingstatementsaretrueorfalse.Unit8》PartI》SectionI》Task11.A1989volcanoeruptioncausedallfourenginesofanairplanetostall,whichisjustoneofmanysevereeruptionsrecordedinhistory.2.Researchersarenowkeepingacloseeyeonover70volcanoesthatcouldpossiblyerupt.(Nobodyhasseenanythinglikeitin9,000years.)FF________(Theyarelookingatabout170thatcouldpotentiallyerupt.)3.GoogleMapshelpstheUSGeologicalSurvey’svolcanohazardsprogramtodetectallpossibleUSvolcanoeruptions.4.MostvolcanoesarearoundtheRingofFire,whichliesalongtheeasterncoastoftheAmerica.5.Thewebsitelaunchedbythevolcanohazardsprogramprovidesbothvolcanoandearthquakeinformation.TT________Unit8》PartI》SectionI》Task1F____(MostofthevolcanoesarealongthewesterncoastoftheUSandupthroughAlaska.)Task2Studythevolcano-relatedwordsbelowintheleftcolumnbymatchingthemwiththeirdefinitionsintherightcolumn.Someofthemareusedinthevideoclip.Watchthevideoclipasecondtimeandthenputdownthewordsyouhaveheard.Unit8》PartI》SectionI》Task21.crater2.RingofFire3.mantle4.seismic5.crusta.thepartoftheEarththatsurroundsthecentralcoreb.theoutermostlayerofrockofwhichaplanetconsistsc.theroundholeatthetopofavolcanod.relatingtoorcausedbyanearthquakee.abeltofseismicandvolcanicactivityroughlysurroundingthePacificOceanUnit8》PartI》SectionI》Task26.Lava7.plate8.magma9.eruption10.plume11.molten12.dormantf.burstingandexplosionofavolcanog.atall,thinmassofsmoke,dustorsimilarsubstance,thatrisesupintotheairh.notactiveorgrowing,buthavingtheabilitytobeactiveatalatertimei.hotliquidrockwhichcomesoutoftheEarththroughavolcanoj.eachoftheseveralrigidpiecesoftheearth’slithospherethattogethermakeuptheearth’ssurfacek.aliquidstateofmetalorrockcausedbyextremeheatl.hotliquidrockfoundjustbelowthesurfaceoftheEarthI’veheard.RingofFire,seismic,lava,eruption,plume__________________________________Task3Watchthevideoclipagainandthenhaveagroupdiscussionbasedonthefollowingquestions.Afterthediscussion,eachgroupwillgiveabriefreporttotheclass.Unit8》PartI》SectionI》Task31.Doyouknowanydisasterscausedbyvolcanoesinhumanhistory?2.Livingnexttoavolcanocanbedangerous.Supposeyouwereagovernmentofficial,howwouldyouplantoevacuatepeoplequicklyandsafely?e.g.Mt.VesuviuseruptioninItalyintheyear79AD;thecityofPompeii_________________________________________________________(open)____Unit8》PartI》SectionI》Task33.Around500millionpeopleintheworldlivenearvolcanoes.Arethereanybenefitstolivingnearvolcanoes?Canscientistsforecastvolcaniceruptions?Volcanoescanbebeneficial,notonlyinimprovingagricultureorasanenergysourcelikefertilesoils,geothermalenergy,butalsoeconomicallyinbusinessopportunitiesandrecreationandtourismlikemineralresources,industrialproducts,spasandresorts._______________________________________________________________________________________________________________________________________________________________________________________________________________________Unit8》PartI》SectionI》Task3【Script】4.Volcanoeruptionaffectsplacestentothousandsofmilesfromaneruptionsitebecauseoftheejectionofvolcanicrockfragments,gases,andaerosols(悬浮微粒)intotheatmosphere.WhatimpactdidtheeruptionoftheEyjafjallajokullvolcanoinIcelandApril,2010haveonpeople?ItcausedgreatchaosoverEuropeanairspace,resultinginthecancelationofhundredsofEuropeanflights.Theeruptionalsocausedpartsofamassiveglaciertomelt,leadingtosevereflooding.__________________________________________________________________________