人教版高中英语选修五单元PPT课件

选修6 教学辅助课件 Unit5 3 1 Tobeabletolistsomenaturaldisasters2 Tohaveageneralunderstandingaboutvolcanoes3 ToknowsomebasicinformationaboutMountKilauea 4 Moreandmorenaturaldisastersandextremeweatherareimpactingonourlives Canyoulistany What sthevideoabout thepowerofnature 5 floodlightningthunderstormsandstormhurricanetornadotyphoonlandslideearthquaketsunamivolcaniceruption 闪电洪水龙卷风雷暴火山喷发沙尘暴海啸地震飓风滑坡台风 Therearesomewordsaboutnaturalphenomenaornaturaldisasters Matchthemup 6 tsunami anearthquakehappeningundertheseafloor Guesswhichnaturalphenomenonornaturaldisasterisbeingdefined 7 earthquake asuddenviolentmovementoftheEarth ssurface sometimescausinggreatdamage 8 thunderstorm alotofrainfallingquickly withloudnoisesandflashesoflight 9 sandstorm astormcausedbystrongwindsandblowingsandordust 10 flood alotofwaterinanareawhichisusuallydry 11 tornado acolumnofairthatturnsveryquickly 12 typhoon atropicalcyclone 热带气旋 occurringinthewesternPacificorIndianOcean 13 hurricane aviolentstormwithextremelystrongwindsandheavyrain 14 landslide alargeamountofearthandrocksfallingdownaclifforthesideofamountain volcaniceruption ashsometimesrisingintotheairfrominsidetheearth Whatdoyouknowaboutvolcanoes Themagmaeruptsfromthecrater thelavaflowsslowlydownthemountain lava crater ashcloud volcanicash magma Pleaselookatthediagrambelow Itshowsaneruptingvolcano 1 Howisavolcanoformed Therocksundertheearthbecomehotterandhotteranderuptfromthemountain Moreaboutvolcano Jointsbetweentheplates Oftenneartheoceans 2 Fromwhereisitmostprobableforavolcanotoerupt HaleakalaCrater thelargestdormantvolcanointheworld Maui Hawaii Anactivevolcano Adormantvolcano 休眠火山 Anextinctvolcano 3 Whattypesofvolcanoesdoyouknow ThepositionoftheKilaueavolcano Let slearnsomethingaboutoneofthemostactivevolcanoes TheKilaueavolcano NowwatchapieceofvideoaboutMountKilaueatoknowmoreaboutit MountKilaueainHawaiihaserupted timessince1952 Thecurrenteruptionbeganin andhasbeengoingoneversince Let senjoysomewonderfulmomentsofthelongeruption 62 1983 Hawaii sKilaueavolcanobeganeruptinginJanuary1983withaspectaculararching 拱起 lavafountain ThisphotowastakenonFeb 25 1983 Geologistspreparingtocollectsamplesnearanactivevent 排放口 eruptinginthebackgroundatKilauea seastriftzone 断裂带 onJan 7 1983 Anaerial 空中的 viewofPu uO ocrater wheretheeruptionhasbeenoccurring atdusk soonaftertheKilaueaeruptionbegan June29 1983 AnaerialviewofPu uO ocraterfromthesoutheastonApril21 1988 AnaerialviewofthelavalakeinPu uO ocrater takenAug 30 1990 Thecraterwasabout800feet 250meters indiameter Kilaueavolcano seruptiondestroyedHawaiiVolcanoesNationalPark sWahaulaVisitorCenter shownonthetopin1987 Thebuildingwassetaflame 着火的 bymolten 熔化的 lavaonJune22 1989 LavafromKilaueavolcanoflowsfromatubeintotheseanearKupapauPointinHawaii Nov 27 1989 LavaenterstheoceaninMay2010fromtheKalapanaflowatKilaueavolcanoinHawaii AgeologisttakingasampleonJuly14 2010 fromarecentlyformedskylight 天窗 ontheQuarryflowlavatube 采石场流岩管 TheQuarrylavaflowbeganin2010 Haveyoueverthoughtabouthowpowerfulnatureis Trytocompletethetable Groupwork Haveyoueverconsideredhowweakhumansarecomparedwithavolcano hurricaneorearthquake Inyourgroupsdiscusswayshumanbeingsprotectthemselvesfrompowerfulnaturalforces Groupdiscussion P332 Wecanhelplessenthedamageandlossescausedbyitthroughcombinedeffortsofriskassessment 评估 andearlywarning Weshoulddomoretop