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12 Cards in this Set
- Front
- Back
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groundwater
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water in the zone of saturation
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hydrologic cycle
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the unending circulation of Earth's water supply. the cycle is powered by energy from the sun and is characterized by continuous exchanges of water among the oceans, the atmosphere, and the continents
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runoff
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water that flows over the land rather than infiltrating into the ground
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transpiration
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the release of water vapor to the atmosphere by plants
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drainage basin
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the land area that contributes water to a stream
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divide
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an imaginary line that seperates the drainage of two streams; often along a ridge
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factors that influence stream velocity
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1-gradient
2-shape, size, and roughness of channel 3-discharge |
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gradient
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the slope of a stream; generally expressed as the vertical drop over a fixed distance
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meander
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a loop-like bend in the course of a stream
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discharge
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the quantity of water in a stream that passes a given point in period of time (meters^3/sec)
(channel width-m X channel depth-m X velocity-m/s) |
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longitudinal profile
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a cross section of a stream channel along its descending course from the head to the mouth
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mouth
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the point downstream where a river empties into another stream or water body
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