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12 Cards in this Set
- Front
- Back
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Runoff is water that... |
doesn't soak into the ground or evaporate. |
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What factors affect runoff? |
Time, Gravity, and amount of rain |
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Vegetation affects runoff by___________ water. |
slowing down |
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The wearing away of rock and soil is called... |
erosion. |
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What is the difference between rill and gully erosion? |
Gully erosion creates much larger channels than rill erosion. |
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How does a stream channel become deeper and wider? |
Gravity pulls the stream channel downwards. |
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Streams are part of _____ systems. |
River |
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What is the largest drainage basin in the United States? |
the Mississippi River |
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What defines a stream as a young stream? |
It flows quickly through steep valleys. |
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What part does erosion play in the development of mature streams? |
It wears down the rocks that cause waterfalls in young streams. |
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Broad C-shaped curves in a stream are called... |
Meanders |
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A delta is created when... |
Sediments are deposited as water empties into an ocean. |
