unit_5_the_power_of_nature.ppt

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1、Period1&2WarmingupandReadingIUnit5ThePowerofNatureRememberwhathappenedonDec26,2004?tsunamiDoyouknowanyothernaturaldisasters?Pleaseworkwithyourpartnersandmakealistofnaturaldisasters.Warmingup(4m)earthquakefloodsdroughtthunder/lightningtornado/cyclonehurricane/typhoonvolc

2、ano-eruptionWhatdoyouknowaboutvolcano?Doyouknowhowavolcanoerupts?volcano-eruptionBoilingrockeruptsfromthecrater;thelavaflowsslowlydownthemountain.MagmachamberLavaCraterAshcloud/volcanicashMoreaboutthevolcano1.Howisavolcanoformed?Therocksundertheearthbecomehotterandhotte

3、randeruptfromthemountain.Neartheoceans.Whereismostpossibleforavolcanotoerupt?AnextinctvolcanoHaleakalaCrater,thelargestdormantvolcanointheworldMaui,HawaiiAnactivevolcano3.Whattypesofvolcanoesdoyouknow?dormantvolcanoQuestionsYesNo1Doyoulikeworkingoutsideaswellasinside?2D

4、oyouenjoytravellingtounusualplaces?3Doyouenjoytakingrisks?4Doyoudislikedoingthesamethingeveryday?5Doyoulikeadventureinyourlife?6Areyouinterestedinstudyingrocksandotherthingsthatmakeupthesurfaceoftheearth?Whatqualitiesareneededforavolcanologist?Areyousuitableforbeingavol

5、canologist?Answer“yes”or“no”tothefollowingquestions.Pre-reading(4m)Predicting(预测)Whatmightbetalkedabout?Whatisthewriter?Whendidhefirstseeaneruption?Howdiditlooklike?Whatwashewearingwhengettingclosetothecrater?Andwhatwastheresult?Skimthetextandanswerthefollowingquestions

6、Skimming(3m)Whatisthewriter?Whendidhefirstseeaneruption?Howdiditlooklike?HeisavolcanologistworkingfortheHawaiianVolcanoObservatory.HemainlycollectsinformationaboutMountKilauea.ItwasinthesecondweekafterhearrivedinHawaii.Itwasverybrightalthoughitwasnight.Redlavafountained

7、hundredsofmetersintotheairanditwasafantasticsight.3.Whatwashewearingwhengettingclosetothecrater?Andwhatwastheresult?Hewaswearingwhiteprotectivesuitsthatcoveredhiswholebody,helmets,bigbootsandspecialgloves,justlikeaspaceman.Asaresult,itmadehimdifficulttowalk.1.Whyisavolc

8、anologist’sjobimportant?2.WhyisthelavathatflowsonMountKilaueamoredangerousthantheactualeruption?3.Whydidthesci