American-Geography

Questionsforrevision:1.DescribetheAmericannationalflag.TheStar-SpangledBanner1.madeupof13alternatingredandwhitestripesand50whitestarsonabluefield2.Starsareconsideredasymboloftheheavensandthedivinegoal3.thestripeissymbolicoftheraysoflightfromthesunWhite:SignifiespurityandinnocenceRed:SignifiesvalorandbraveryBlue:SignifiesVigilance,perseverance,andjustice2.DescribethenationalsealoftheUS.TheGreatSealshowsawide-spreadeagle,facedfront,havingonhisbreastashieldwiththirteenperpendicularredandwhitestripes,surmountedbyabluefieldwiththesamenumberofstars.Inhisrighttalontheeagleholdsanolivebranch,inhisleftabundleofthirteenarrows,andinhisbeakhecarriesascrollinscribedwiththemotto:EPluribusUnum“,meaningoutofmany,oneTheEagleappearsintheSealsofmanyofourStates,onmostofourgoldandsilvercoinage,andisusedagreatdealfordecorativepatrioticpurposes.Theeaglerepresentsfreedom.1.Locationandsize2.Topography(地形,地质)Majormountainsandriversthreegeographicaldivisions3.Climate4.Naturalresources5.Population6.Geograpicalregions7.MajorcitiesII.AmericanGeography1.TheUnitedStatesismadeupofDistrictofColumbiaand_____states.A.48B.49C.50D.512.WhatarethenamesofthetwostatesoftheUnitedStateswhicharenoncontiguous?A.AlaskaandHawaiiB.AlaskaandOhioC.OhioandKansasD.HawaiiandKansas48contiguousstates+2noncontiguousstates+D.C1.LocationandSize1.ContinentalUnitedStatesliesincentralNorthAmericawithCanadatoitsnorth,MexicoandtheGulfofMexicotoitssouth,theAtlanticOceantoitseastandthePacificOceantoitswest.2.The2neweststates:AlaskaandHawaiiseparatedfromcontinentalUnitedStatesAlaskabordersonnorthwesternCanada,HawaiiliesinthecentralPacific.3.theadvantagesofthelocationoftheUSTheUShasanideallocationforitsdevelopment.-ItsAtlanticcoastfacesthedevelopedcountriesofWesternEurope,anditsPacificcoastandHawaiigivethenationanapproachtotheFarEastandAustralasia-InthepasttheAtlanticandPacificOceansservedasnaturalbarriersbetweentheUSandtherestoftheworld.ThisallowedtheUStogrowandbecomestrongwithlittleoutsideinterference.-AndtodaythedevelopmentofmeansofcommunicationandtransportationmakestheU.S.wellconnectedtotherestoftheworld.SizeoftheUS--alandareaof9.3millionsquarekilometers.--stretches2,575kilometersfromnorthtosouthand4,500kilometersfromeasttowest.--the4thlargestcountryintheworldinsizeafterRussia,CanadaandChina.--Alltogetherthereare50statesintheUS.--OfallthestatesAlaskaisthelargestinareaandRhodeIslandthesmallest.--onthemainlandTexasisthelargest.2.topography:MountainsinU.S.A.AppalachianMountains阿巴拉契亚山脉RockyMountains落基山脉TheAppalachianMountains--runslightlyfromthenortheasttosouthwest--old(havebeenwornoutovermillionsofyears)andlow(thehighestpeakisonlyalittleover2,000metres)--notedforvirginforestsandmines--servedasanaturalbarrierforwestwardmovementduringtheearlysettlement.TheAppalachianMountainsthegreatmountainsystemofeasternNorthAmerica;onesixthofthenationalterritoryonthecontinent;FromprovinceofQuebecinCanadatoNorthernAlabama.TheRockyMountains--runslightlyfromthenorthwesttosoutheast--younger(areconsideredasyoungasChina’sHimalayas)andhigh(withthehigherpeakElbertofabout4,500metres)--thebackboneoftheNorthAmericancontinentandisknownastheContinentalDivide.--famousforlotsofnaturalnationalparks--ItisalsoknownastheContinentalDivide(大陆分水岭),becauseitseparatesthemajorriversystemsoftheUnitedStates.RockyMountains----greatbackboneofNorthAmericathegreatmountainsystemofwesternNorthAmerica;5000kmsfromNewMexicotoCanada;averagealtitude:morethan3000msabovesealevel.AppalachianMountainsVSRockyMountainsAppalachianMountainsRockyMountainsDirectionFromthenortheasttosouthwestFromthenorthwesttosoutheastAgeOlderYoungerHeightLower(2037m)Higher(4500m)2.Topography:RiversintheUSATheriversinthecountryaremainlylyingbetweentheAppalachianandRockyMountains.1.TheMississippi--3,782kilometreslong--TheMississippianditstributariesdrainoneoftherichestfarmareasintheworld--Theyforma19,000-kilometresystemofwaterwaysandserveasimportantmeansoftransportation.--called“fatherofwaters”andthe“oldmanriver”RiversinU.S.A.MississippiRiverFatherofallWaters2.TheMissouri--over6,000kilometresandisoneofthelongestriversintheworld--runs3,725kilometresbeforeitjoinstheMississippi3.TheOhio--about1,500kilometreslong--calledtheAmericanRuhr(aftertheRuhrRiver鲁尔河inGermany),famousforitsrichvaluabledeposits--Theareaiswellknownforitssteelindustry4.OnthePacificsidethereare2greatrivers:theColoradointhesouth,andtheColumbiarisesinCanada.TheGreatLakesNiagaraFalls尼亚加拉瀑布ThefiveGreatLakesLakeMichiganLakeSuperiorLakeErieLakeHuronLakeOntario--theworld’slargestGroupoffreshwaterlakes--TheyarealllocatedbetweenCanadaandtheUSexceptLakeMichiganTheyare:LakeSuperior苏必利尔湖：thelargestfreshwaterlakeintheworld.LakeMichigan密歇根湖：theonlyoneentirelyintheUSLakeHuron休伦湖LakeErie伊利湖LakeOntario安大略湖2.Topography:ThreeGeographicDivisionsGeographicDivisionsGreatPlainsWesternpartEasternpartTheEasternPartTheeasternpart—thehighlandsformedbytheAppalachianRange(阿巴拉挈亚山脉).onesixthoftheterritoryrelativelylow,withanaveragealtitudeof800metersabovesealevelTheWesternPartHighplateaus(高原)andmountains—extendingfromCan