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1、Group6Typhoon1. Definitionsoftyphoon.2.Causes oftyphoon.3.Thedisadvantagesoftyphoon.4.Theadvantagesoftyphoon.5.Methodsofprevention oftyphoon.Fiveparts1.TyphoonisanameusedineastAsiaforaHurricane.2.TyphoonisatypeofcycloneoccurringinthewesternregionsofthePacificOcean.3.Atyphoonissimilartoahur
2、ricaneinlevelsofdestructiveness.4.ThewordtyphooncomesfromtheChinesetermtai-fungmeaninggreatwind.Partone:definitionsoftyphoon5.Thetyphooncenteriscalledtheeyeoftyphoon.Thediameterrangefrom10kmto70km,45kmonaverage.Thewindspeedandairpressureintheeyeoftyphoonbotharethelowest,andtheweatherappear
3、tobewindless,partlycloudy,warmanddry.6.TheleveloftyphoonTY：Theaveragewindspeedinthecenterofbottomrangesfrom32.7m/sto41.4m/s，thelevel12-13.STY(severetyphoon)：Theaveragewindspeedinthecenterofbottomrangesfrom41.5m/sto50.9m/s，thelevel14-15.SuperTY：Theaveragewindspeedinthecenterofbottomishigher
4、than51.0m/s,thelevel16orhigher.(Rammasun17)NowIwilltellyouhowtyphooncomeintobeing.Mostlyinsummerandautumnthereexiststyphoon.Inbroadseasurface,whentemperaturerisesabove26degrees,thevaporwouldgoupcausetheairnearseasurfaceislighterthantheairabove.whentheairgoesupitwillbeturnedintoliquidforthe
5、higher,thecolder,releasingmoreheat,whichhelpsthelowerairgoesup.Anditcontinuesandcycles.Andtheliquidisheavierthanair,sotheairdroppeddownandthereisarainfall.Becauseofthecoriolisforceitbecomesrollingaroundandaround.Thentyphoonisthere.Whentyphoonarrivesatlands,treesandbuildingswillcutdownitsfo
6、rce,makinglessdamageandloss.Parttwo:CausesofTyphoonPartthree:disadvantagesoftyphoon1.Typhoonmaydestroythecrops.2.Typhoonisoneoftheweathersystemsthatbringsheavyrain.inthetyphoonarea,mayproduceheavyrain.3.Theweatheroftenbringsaboutadangeroussituationcausedbytyphoon,theseawaves,aseriousthreat
7、tothesafetyofnavigation.Afterthelandingoftyphoonstormsurge,thewatercandestroycrops,allkindsofbuildings,resultinginheavylossesoflifeandpropertyofthepeople.Partfour:theadvantagesoftyphoon1.Typhoonbringsabundantfreshwater.2.Typhooncausestropicalcooling.Ifthereisn
