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Continental Divide

high place from which rivers flow in different directions


a slowly moving mass of ice

transportation corridors

paths that make traveling easier


a stream that feeds into a larger river

Rocky Mountains

Located WEST of the Great Plains and EAST of the Basin and Range; contains the Continental Divide which determines the directional flow of rivers;Contains rugged mountains stretching from Alaska to Mexico with high elevations

Appalachian Mountains

a mountain range in the eastern United States extending from Quebec to the Gulf of Mexico

Death Valley

the hottest, driest region of North America, located in Eastern Califoria

Great Lakes

Lake erie, ontario, superior, huron, michigan form border between US and Canada

St. Lawrence River

flows from lake ontario to the atlantic ocean

Mississippi River

longest and biggest river in US that has its source in the Minnesota & its mouth in Louisiana

rain shadow

the drier side of mountain


Equatorial region between the Tropic of Cancer and the Tropic of Capricorn. It is characterized by generally warm or hot temperatures year-round, though much variation exists due to altitude and other factors. (370)


a vast treeless plain in the arctic regions between the ice cap and the tree line


permanently frozen layer of soil beneath the surface of the ground


a treeless grassy plain


soil material deposited by running water


electricity produced by water power

Grand Coulee Dam

a dam on the Columbia River in the state of Washington and produces more hydroelectricity than any other dam in the U.S>

St. Lawrence Lowlands

most canadians live here because of its proximity to the us mild climate and the trade routes the great lakes provide

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