Typhoo台风英语讲解.ppt

Group6 Typhoon 1 Definitionsoftyphoon 2 Causesoftyphoon 3 Thedisadvantagesoftyphoon 4 Theadvantagesoftyphoon 5 Methodsofpreventionoftyphoon Fiveparts 1 TyphoonisanameusedineastAsiaforaHurricane 2 TyphoonisatypeofcycloneoccurringinthewesternregionsofthePacificOcean 3 Atyphoonissimilartoahurricaneinlevelsofdestructiveness 4 ThewordtyphooncomesfromtheChinesetermtai fungmeaninggreatwind Partone definitionsoftyphoon 5 Thetyphooncenteriscalledtheeyeoftyphoon Thediameterrangefrom10kmto70km 45kmonaverage Thewindspeedandairpressureintheeyeoftyphoonbotharethelowest andtheweatherappeartobewindless partlycloudy warmanddry 6 Theleveloftyphoon TY Theaveragewindspeedinthecenterofbottomrangesfrom32 7m sto41 4m s thelevel12 13 STY severetyphoon Theaveragewindspeedinthecenterofbottomrangesfrom41 5m sto50 9m s thelevel14 15 SuperTY Theaveragewindspeedinthecenterofbottomishigherthan51 0m s thelevel16orhigher Rammasun17 NowIwilltellyouhowtyphooncomeintobeing Mostlyinsummerandautumnthereexiststyphoon Inbroadseasurface whentemperaturerisesabove26degrees thevaporwouldgoupcausetheairnearseasurfaceislighterthantheairabove whentheairgoesupitwillbeturnedintoliquidforthehigher thecolder releasingmoreheat whichhelpsthelowerairgoesup Anditcontinuesandcycles Andtheliquidisheavierthanair sotheairdroppeddownandthereisarainfall Becauseofthecoriolisforceitbecomesrollingaroundandaround Thentyphoonisthere Whentyphoonarrivesatlands treesandbuildingswillcutdownitsforce makinglessdamageandloss Parttwo CausesofTyphoon Partthree disadvantagesoftyphoon 1 Typhoonmaydestroythecrops 2 Typhoonisoneoftheweathersystemsthatbringsheavyrain inthetyphoonarea mayproduceheavyrain 3 Theweatheroftenbringsaboutadangeroussituationcausedbytyphoon theseawaves aseriousthreattothesafetyofnavigation Afterthelandingoftyphoonstormsurge thewatercandestroycrops allkindsofbuildings resultinginheavylossesoflifeandpropertyofthepeople Partfour theadvantagesoftyphoon 1 Typhoonbringsabundantfreshwater 2 Typhooncausestropicalcooling Ifthereisnotyphoon tropicalwillbemorehot borealwillbemorecold andtemperatezonewilldisappear 3 Typhooncanincreasefishproduction 4 Typhoonmakespeopleliveandworkinpeace Atsea 1 Beforethetyphoon youshouldimmediatelyfindaplaceforyoutotakeshelterfromthewind 2 Ifyouarecaughtinatyphoon youshouldtimelyasktherelevantdepartmentsforhelp 3 Whenyouarewaitingforrescue youshouldtakeemergencymeasuresquicklyawayfromtyphoon Partfive Methodsofpreventionoftyphoon Athome 1 Closethedoorandwindow 2 Movefromtheoldhousetoasafeplace 3 Bringyouroutdoorthingsin Onoutside 1 Ifyouareoutside lookfortallbuildingstoescape soasnottobeblownawaybypowerfultyphoon 2 Donotstandindangerousplaces suchas thinobjects References 1 台风 百度百科 ThankYou