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Chapter 4 Lesson 1

TermDefinition
lock a gateway passageway used to raise or lower boats in a waterway
tributary a small river that flows into a larger one
levee a raised riverbank used to control flooding
Continental Divide an imaginary line through the Rocky Mountains that separates rivers that flow west from rivers that flow east
coastal plain a flat lowland next to a coast
fall line an area where waterfalls flow from higher to lower ground
cordillera a region of parallel mountain chains
timberline the elevation above which it is too cold for trees to grow
ethanol a liquid fuel made in part from plants
national park a park that has been set aside for the public to enjoy for its great natural beauty
chinook a dry wind that sometimes blows over the Great Plains in winter
Created by: rmayfield
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