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| water that doesn't soak into the ground or evaporate but instead flows across Earth's surface |
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| a type of surface water erosion caused by runoff, in which a small stream forms during a heavy rain, carries away plants and soil, and leaves a scar or channel on the side of the slope |
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| a type of surface water erosion due to runoff that occurs when a rill channel becomes broader and deeper |
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| a type of surface water erosion due to runoff, in which rainwater flowing into lower elevations loses energy and leaves behind sediments that cover the soil like a sheet |
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| a land area from which a stream gets its water |
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| a curve in the side of a stream formed by a fast-moving channel of deep water |
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| a broad, flat valley floor carved by a meandering stream |
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| a triangular or fan-shaped deposit of sediments that is formed when a stream or river slows and empties into an ocean, gulf, or lake |
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| a triangular deposit of sediments that is formed when a river empties from a mountain valley out onto a flat, open plain |
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| water that soaks into ground and collects in the small spaces between bits of rock and soil |
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| describes rock and soil that have connecting pore spaces through which water can pass |
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| material through which water cannot pass |
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| a layer of permeable rock that allows water to move freely |
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| the upper surface of the zone of saturation, which is the area where all the pores in the rock are filled with water |
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| the point where the water table meets Earth's surface and water flows out |
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| a hot spring that erupts periodically and shoots steam and water into the air |
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| an underground opening that is formed when acidic groundwater moves through cracks in limestone and dissolves the rock |
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| an ocean current that runs along the shore, moves sediment along shoreline, and is caused by waves colliding with the shore at slight angles |
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| deposits of sediment that run parallel to the shore and stretch inland as far as the tides and waves can deposit sediment |
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| sand deposits that run parallel to the shore but are separated from the mainland and whose size and shape change constantly due to wave action |
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