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18 Cards in this Set
- Front
- Back
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Groundwater
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The water beneath the Earth's surface
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Source
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Place where a river begins
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Channel
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The deepest part of a river or other body of water
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Mouth
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Place where a river empties into some larger body of water
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What are the three main parts of a river>
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Source, channel, mouth
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Tributaries
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A stream or river that flows into a larger stream or river
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River system
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A river and its tributaries
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Drainage basin
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Land drained by a river system
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Erosion
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Wearing away of the Earth's surface
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Floodplain
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Low flat land along a river
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Delta
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Triangle-shaped land at a river's mouth.
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How are the rivers in the Great Basin different from most other rivers in the United States?
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They flow into the low-lying land and have nowhere to go. Some rivers dry up; others flow into shallow muddy pools.
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How does a river erode the land?
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A river's current sweeps rocks and sand and soil down the river. It scrapes along the river bed and banks and carves a deep and wide path.
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Levee
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High wall made of earth
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Dam
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A wall built across a river to hold back water
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How does the river build up the land?
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It drops silt (fine sand and soil) at the mouth and if there is no strong current to carry it away, it builds up.
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What have people done to control flooding on rivers?
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Built levees and dams
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Why did levees fail to protect some areas against flooding?
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The levees broke
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