英美国家概况（美国部分）Unit 10 Land People and Natural Resources

,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,Click to edit Master title style,*,University of International Business and Economics Press,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,Click to edit Master title style,*,英美国家概况,The United States of America,Unit,10,Land,People,and Natural Resources,The United States of America,Think about these questions before we start:,1.What do you know about the land features of the USA?,2.Which area does Americas“breadbasket refer to?Explain the reasons.,3.What climates does the USA have?,Warming-up Activities,Contents,Land&People,Natural Resources,General Introduction,USA(United States of America),consisting of 48 contiguous states and the noncontiguous states of Alaska and Hawaii.,Area,-Total 3,794,101 sq mi,-Water(%)6.76,Population,-2021 estimate 314,047,000,-Density 87.4/sq mi,General Introduction,A Map of the USA,General Introduction,Land&People,The Land and Its Features,The Variety of the Land,The Population and Human Resources,1,2,3,1.The Land and Its Features,a varied mosaic of landform typesbroad plains,rolling hills,rugged plateaus,and majestic mountains.,2.The Variety of the Land,Mountains and Valleys of the Pacific Region,Mountains,Plateaus,and Basins of the Interior West,Interior Lowlands,Appalachian Mountains,Piedmont and Atlantic and Gulf Coastal Plains,2.The Variety of the Land,Mountains and Valleys of the Pacific Region,The Pacific region extends from California to Alaska and includes Hawaii.It is home to the countrys greatest mountain ranges,its highest(and“tallest)mountains,and some of the continents most stunning scenery.,2.The Variety of the Land,The Sierra Nevada,2.The Variety of the Land,Two huge plateaus occupy the inland Pacific Northwest and the“Four Corners area of the Southwest.,The Columbia Plateau covers portions of eastern Washington,northeastern Oregon,and western Idaho.,The Colorado Plateau,composed of alternating layers of sandstone and limestone,is centered on the Southwests Four Corners area,where the states of Utah,Colorado,New Mexico,and Arizona meet.,Mountains,Plateaus,and Basins of the Interior West,2.The Variety of the Land,The Columbia Plateau,The Colorado Plateau,Colorados Rocky Mountain National Park,2.The Variety of the Land,Grand Teton National Park,Glacier National Park in Montana,2.The Variety of the Land,2.The Variety of the Land,Interior Lowlands,Moving eastward from the Rocky Mountains and stretching to the Appalachians is a huge area of lowland plains.,East of the Great Plains and extending across the Mississippi River basin to the foothills of the Appalachians is a region variously called the Central or Interior Lowlands or Plains.,2.The Variety of the Land,Appalachian Mountains,2.The Variety of the Land,Piedmont and Atlantic and Gulf Coastal Plains,3.The Population and Human Resources,Some people who live within the United States today do not identify themselves as“American.This is typical of some first-generation immigrants,who retain the national identity of their homeland.When a population feels a sense of belonging(nationality)to their country(state),then they may identify themselves by their country name,as is the case in“America and“Americans.,3.The Population and Human Resources,Population Data and Their Importance,In the United States,a census is a constitutional requirement,and one has been taken every decade(in years that end in 0)since 1790.,3.The Population and Human Resources,For the most part,its more than 300 million people are healthy.Life expectancy at birth is 78 years,75 for males and 81 for females.,The United States also has a high rate of literacy:99 percent.Eighty percent of the population over 15 years of age has a high school education,and nearly 25 percent are college graduates.,An aging population creates several problems.,With declining fertility rates and an aging population,the most obvious solution to the problems is to increase immigration quotas.,3.The Population and Human Resources,Settlement,Initially,most European settlement hugged the eastern seaboard.,Gradually,it spread southward and westward into the Ohio and Mississippi valleys,the Great Lakes region,and adjacent areas.,Americans have always been“on the go.,III,Natural Resources,Firtile Farmland,1,Water Features,2,Forests,3,Minerals,4,1.,Fertile Farmland,The United States is blessed with some of the worlds best farmland.Vast areas of flat land with good soil and adequate moisture provide the foundation on which the worlds most productive agricultural economy was developed.,fruits,vegetables,grains,hay,cotton,tobacco,sugar,beans,peas,lentils,flowers,and landscaping plants and trees,just to name a few.,Crop Resources,The Black Belt,On the Selma chalk the Black Belt of Alabama and Mississippi is formed.“Black refers to the color of the soil,not to the color of the people who live there,although the confusion is perhaps not surprising given the development of