英语国家概况chapter_7_Geography_and_People.ppt.ppt
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1、The United States of America,Unit 8 Geography and People,Contents,I Geography,Watch the maps of carefully and find clues to the following itemslocation(bordering neighbors),Where is the US?,America,North America,Size and Location,North America:In the central part of(except Alaska and Hawaii);on the
2、north:Canadaon the south:Mexico and the Gulf of Mexicoon the east:Atlantic Oceanon the west:Pacific Ocean,The United States of America,Total area9,5 million square kilometers;4th largest 48 states:for many yearsAlaska and Hawaii:the 49th and 50th states in 1959.Alaska borders on northwestern CanadaH
3、awaii lies in the central Pacific OceanAlaskathe largest Rhode Islandthe smallest Texasthe largest on the mainland,Three Geographic Divisions,The Eastern Part,The eastern partthe highlands formed by the Appalachian Range(阿巴拉挈亚山脉).,one sixth of the territory relatively low,with an average altitude of
4、 800 meters above sea level,The Western Part,High plateaus(高原)and mountains:from Canada through the western part of the United States to Mexico and further south.One third of the countrys territoryRocky mountains:3000 meters above sea level,The Great Central Plain,Between the Appalachians in the eas
5、t and the Rocky Mountains in the west.,half of Americas landmassstretch from the Great Lakes in the north to the Gulf of Mexico in the south,Main Geographical Regions,The Mid-Atlantic States,New England,long historythe Europeans first settlementincluding six states in the northeastern corner.Massach
6、usetts:Boston-biggest city,center top-ranking universities HarvardYale MIT,The South Region,including 13 states with plentiful rainfall and a mild to warm climate great size with few large cities New OrleansMiamiAtlanta,American Southern Area,The Western Region,including 11 states,like Washington,an
7、d California,etc.California San FranciscoLos Angeles 14 percent of American gross domestic product,Oregon&California,Alaska,Alaska-glaciers,waterfalls and lakes Native populationEskimos-half of all Alaska Natives IndiansAleutspetroleum,natural gas,precious metals,seafood processing,timber,and touris
8、m,etc.,Alaska,Hawaii,In the central Pacific eight major islands mild temperaturetourist businesslargest source of income.,Hawaii,Hawaii Dance,River and Lakes,The Mississippi Riverthe longest and the most important river length6020 kilometersFather of waters,Known as the“father of waters”to American
9、Indians Mark Twain:The Adventures of Huckleberry Finn tells the story of how the boy Huckleberry Finn and his black friend Jim,a runaway slave,sailed down the Mississippi on a raft.,The Missouri密苏里河 and the Ohio俄亥俄河two of the largest tributaries of the Mississippi.form an important inland navigation
10、 and irrigation system.Hudson River哈德逊河 flows through the state of New York length520 kilometers.,The Great Lakes,The most important system of inland waterways in the world.Lake Michiganwholly within the United States part of the national boundary between the United States and Canada runs through th
11、is chain of lakes.,Niagara Falls-located on the U.S.Canadian border between Lake Erie and Lake Ontario.,Climate,Mainly temperate:mild subtropical zones Tropical:Florida and Hawaii50 centimeter rainfall linein the eastcomparatively more rain,so easy agriculture;in the westmuch less rain(less than 50
12、cm.a year)with the exception of the coastal areas along the Pacific.,Major Cities,Tips:New Yorkcommercial and financial center of the United StatesWashington D.C.seat of the federal governmentLos Anglessecond largest city Chicagothe windy citySeattle;Philadelphia;San Francisco;etc.,New York,Three is
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