Geography-of--USA-美国地貌

NationalFlag—TheStarsandStripesTheStarsandStripesoriginatedasaresultofaresolutionadoptedbytheSecondContinentalCongressatPhiladelphiaonJune14,1777.Thethirteenstripes(alternatingredandwhite)representtheoriginalcolonies;knownasOldGlory;the50starsrepresentthe50states;Whiteinabluefieldrepresentsanewconstellation.NYWAHICALANewYorkWashingtonHawaiiCaliforniaLouisianaThreeGeographicDivisionsGeographicDivisionsCentralpartEasternpartWesternpartMountainsinU.S.A.AppalachianMountains阿巴拉契亚山脉RockyMountains落基山脉AppalachianMountainsVSRockyMountainsAppalachianMountainsRockyMountainsDirectionFromthenortheasttosouthwestFromthenorthwesttosoutheastAgeOlderYoungerHeightLower(2037m)Higher(4500m)TheRockyMountainsTheRockymountainsareregardedasthebackboneoftheNorthAmericancontinent.ItisalsoknownastheContinentalDivide(大陆分水岭),becauseitseparatesthemajorriversystemsoftheUnitedStates.TheEasternPartTheeasternpart—thehighlandsformedbytheAppalachianRange(阿巴拉挈亚山脉).onesixthoftheterritoryrelativelylow,withanaveragealtitudeof800metersabovesealevelTheWesternPartHighplateaus(高原)andmountains—extendingfromCanadathroughthewesternpartoftheUnitedStatestoMexicoandfurthersouth.–Onethirdofthecountry’sterritory–RockymountainsTheGreatCentralPlainBetweentheAppalachiansintheeastandtheRockyMountainsinthewest.HalfofAmerica’slandmassonthecontinentStretchfromtheGreatLakesinthenorthtotheGulfofMexicointhesouthDrainedbytheMississippianditstributariesFivegreatlakesandNiagaraFallsRiversinU.S.A.RiversinU.S.A.MississippiRiverFatherofallWatersLakesintheUnitedStatesTheGreatLakesTheGreatLakesNiagaraFalls尼亚加拉瀑布ClimateintheUnitedStatesMaritimeclimateContinentaldesertclimateContinentalsteppeclimateHumidcontinentalclimateSub-tropicalclimateSub-arcticclimateTropicalclimateClimateMainlytemperatewithsomemildsubtropicalzoneswithonlythesouthernFloridaandHawaiibeingtropical.50centimeterrainfalllineintheeast—comparativelymorerain,soeasyagriculture;inthewest—muchlessrain(lessthan50cm.ayear)withtheexceptionofthecoastalareasalongthePacific.NaturalResourcesrichinmineralresourcesamongthecountrieswiththegreatestreservesofcoal,ironoreandoil.aboundsinlead,copper,zinc,aluminum,silver,andgold.onefourthoftheterritory—coveredwithforestswhichmainlyconcentrateuponthreeareas:theareaalongthenorthwesterncoastofthePacifictheareainthesouththeareainthenorthrichinoil—oncethelargestoilproducingcountry.oilreserve—alongthecoastoftheGulfofMexico,Texas,Louisiana,andOklahoma.EnergycrisisGulfWarfoughtinearly1991betweenIraqandacoalitionof39countriesorganizedbytheU.S.,mostofwhichrelyonKuwaitandSaudiArabiaasprimarysourceofpetroleum.GeographicalRegionsNewEnglandMiddleAtlanticstatesTheAmericanSouthTheMid-WestTheAmericanWestThePacificCoastNewStatesTheMid-WestTheTopListThelargeststate:Thesmalleststate:Themostpopulousstate:Theleastpopulousstate:Thelargestcities:AlaskaRhodeIslandCaliforniaWyomingNewYorkCity,LosAngeles,Chicago,SanFrancisco,PhiladelphiaNewEnglandincludingsixstatesinthenortheasterncorner.longhistory—theEuropeans’firstsettlementfeaturedwithmountains,valleysandrivers,andcitiesandtownswithhistoricsitestop-rankinguniversitiesHarvardYaleMassachusettsInstituteofTechnology(MIT)NewEnglandTheSouthRegionincluding13stateswithplentifulrainfallandamildtowarmclimatefavorableclimateforagriculturefastgrowingindustryandpopulationinrecentyearsgreatsizewithfewlargecitiesNewOrleansMiamiMemphisAtlantaBirminghamAmericanSouthernAreaTheWesternRegionIncluding11states,likeWashington,OregonandCalifornia,etc.Oregon--wealthofbeautifulforestsandstreamsCaliforniastrikingnaturalfeatures--centralvalley,highmountains,andhotdrydeserts.notablecitiesSanFranciscoLosAngelesSanDiego14percentofAmericangrossdomesticproductpredominantagricultureyieldinghigh-techindustrycentreOregon&CaliforniaAlaskaHawaiiMajorCitiesWhentalkingaboutAmerica,isthereanycitythatyouarefamiliarwith?Andwhy?Tips:NewYork—commercialandfinancialcenteroftheUnitedStatesWashingtonD.C.—seatofthefederalgovernmentLosAngles—secondlargestcityChicago—thewindycitySeattle;Philadelphia;SanFrancisco;etc.NewYorkSituatedonthreeislands—ManhattanIsland,LongIslandandStatenIslandatthemouthofHudsonRiver.Fiveboroughs—Manhattan,Brooklyn,Bronx,RichmondandQueens.theheadquarteroftheUnitedNationsTimeSquare&CentralParkThestatueoflibertyisahugesculpturelocatedonLibertyIslandinNewYorkHarbor.ThismonumentwasagifttotheUSAfromthepeopleofFranceinrecognitionoftheFrench-AmericanallianceduringtheAmericanRevolution.TheformalnameofthestatueisLibertyEnlighteningtheWorld.WashingtonD.C.LocatedonthePotomacRiver.governeddirectlybytheFederalgovernment.DistrictofColumbia—namedafterChristopherColumbuscity—namedafterGeorgeWashington,thefirstpresidentofU.S.WashingtonSkyscrapersWorldWarIIMemorialSanFranciscoGoldenGateBridgeCenterofoil-refining,automobiles,chemicals,commerce,finance,andshippingindustry.Chinatown—thelargestChinesesettlementinAmerica.LosAngelssecondlargestcityintheU.S.;fourtimeslargerthanSanFrancisco.importantelectroniccenterknownforthemanufactureof