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Science

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Term
Definition
gradient   slope of a river channel  
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topography   physical characteristics of the land  
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tributaries   feeder streams  
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bed load   sediment carried along the bottom of the channel of a stream or river  
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velocity   distance water flows within some period of time, such as meters per second or feet per second  
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mouth   a place where a stream or river ends by flowing into another body of water  
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source   a place where a stream or river begins  
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groundwater   water, rain, and melting snow that seeps into the ground and is stored beneath earths surface  
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runoff   precipitation that runs off the ground  
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transpiration   release of water from a plant's leaves into the air  
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precipitation   liquid or solid water that returns to the earth fro the clouds  
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condensation   return of vapor to a liquid state by cooling  
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evaporation   a process where by the heat of the sun changes the water on Earth's surface from a liquid to a gas  
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