Typhoon第一页，共十四页。1.Whatistyphoon.2.Typhoontidbits.3.Howtyphoonform.4.Whatcantyphoonbring.5.Whatshouldwedowhentyphooniscoming.第二页，共十四页。Whatistyphoon?第三页，共十四页。Typhoonisasortofcyclonewhichdefinesthatthevelocityofthecenterismorethan32.7meterpersecondanditoccursonthewestofthePacificOceanwhileitchangesit’snametohurricaneifittakesplaceontheeastofthePacificOceanortheAtlanticOcean.第四页，共十四页。Wegotthreepoints:(1)TyphoonisanameusedineastAsiaforaHurricane.(2)TyphoonisatypeofcycloneoccurringinthewesternregionsofthePacificOcean.(3)Atyphoonissimilartoahurricaneinlevelsofdestructiveness.第五页，共十四页。TyphoonTidbitsTheeyeoftyphoonliesinthecenteroftyphoon,shapedlikeanovaloracircle.TheeyeoftyphoonThediameterrangefrom10kmto70km,45kmonaverage.Thewindspeedandairpressureintheeyeoftyphoonbotharethelowest,andtheweatherappeartobewindless,partlycloudy,warmanddry.第六页，共十四页。HowtyphoonformWhenlotsofseawatergetshotinthesummersun,itevaporatesintotheair.Thismakestheairhotter,too.Whentheairgetswarmenough,itstartstomovehigherupintothesky.Then,coolerairarounditrushesintofillthespacethatisleft.Oncetheairgetswarmer,itstartstomovemorequickly,makingwind.Thewindgoesincircles,anditkeepsmovinghigherinthesky.Thewarmertheairgets,thequickerthewindmoves.Andwhenthewindmovesfasterthan30metersasecond,atyphoonbegins.第七页，共十四页。Typhooncanbring……第八页，共十四页。•Typhoonincreasetheriskoftrafficaccidents(Flightsareputoff;Boatsdippedintowaves;Carsbeblownaway.)•Peoplecan’tliveinanormalway.•Buildingsaredestroyed•......第九页，共十四页。Whatshouldwedowhentyphooniscoming?第十页，共十四页。1、Payattentiontothemediareports,weatherwebsites,orcallweatherhotlinetoknowthelatestdevelopmentsintyphoon.2、Donottraveltoareaswithtyphoonortothebeachforaswim,especiallynottogotosea.Andifyoustayoutside,returnhomeasquicklyaspossible.3、Closedoorsandwindowstoavoidheavyrains.Removingthepottopreventitfromfallingfromawindowsillorbalcony.第十一页，共十四页。4、Itisgoodforyoutoavoidgoingout,soasnottocauseunnecessaryhurtwhensomelargebillboards(toshowadvertisements)ortreeswereblowndown.5、Becauseoftheheavyrain,therearealwaysstagnantwater.Therefore,driversmustdriveslower,andpeoplewhoridebicycleshadbetterchoosetowalkortakebus.6、Donottrytocloseoruseyourhandstotouchthebrokenhighvoltagewire,soasnottocauseelectricshockaccidents.第十二页，共十四页。Inthefaceofnature.Mankindisveryweak.Inordertoreducetheoccurrenceofnaturaldisastersandtheenvironmentfurtherdeterioration.Weneedtoprotectourenvironment.Thankyou!!!第十三页，共十四页。内容总结Typhoon。Whatistyphoon。Thankyou第十四页，共十四页。
