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Physical Geography of the United States and Canada Landforms • Colorado Plateau was eroded by the Colorado River to form the Grand Canyon (in Arizona) • Great Basin includes Death Valley (in South Eastern California) – the hottest and lowest place in the U.S. The Grand Canyon Death Valley Mountains • Mountains form because of collisions between tectonic plates • Mountains are on east and west edges of both United States and Canada Rocky Mountains • Rocky Mountains link the U.S. and Canada – from New Mexico to Alaska • Dry basins and plateaus found between the Pacific Ranges and the Rocky Mountains Basin The Pacific Ranges Mount Stuart is a massive rocky pyramid that utterly dominates the view from Longs Pass. Canadian Shield • Eastern Mountains include the Canadian Shield and Appalachian Mountains • Canadian Shield is a gigantic core of rock that anchors North America • It makes up the eastern half of Canada and North Eastern United States Appalachian Mountains • Appalachian Mountains extend from Quebec to central Alabama • Coastal lowlands are east and south of the Appalachian Mountains The Great Plains Great Plains • Located east of the Rocky Mountains • Extends 400 miles across center of United States • Grasses, very little trees, ideal for farming, little change in elevation Islands United States’ Islands • Manhattan Island - at the mouth of the Hudson River - a major world economic center • The Hawaiian Islands – were formed by volcanic mountains in Pacific Ocean Manhattan Island Canada’s Islands • Newfoundland, Prince Edward Island, Cape Breton Island – in the East • Vancouver Island – in the West Vancouver Island Water • In North America, the high ridge of the Rockies is called the Continental Divide. – A divide is a high point or ridge that determines the direction that rivers flow – Some rivers have their headwaters, or source, in the Rockies – Many tributaries, or brooks, rivers, and streams, flow into these rivers Rivers • Mississippi River is North America’s longest river. - it runs from Minnesota to the Gulf of Mexico • St. Lawrence River is one of Canada’s most important rivers. - it links the cities of Quebec, Montreal, and Ottawa Fall Line • The Fall Line marks the place where the higher land of the Piedmont drops to the lower Atlantic Coastal Plain • Along the line, rivers become rapids and waterfalls • Cities of Philadelphia, Baltimore, and Washington D.C. are along the fall line • Niagara Falls (along US/Canadian border) is used for hydro-electric power The Piedmont Niagara Falls