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10 Cards in this Set

  • Front
  • Back
headwater
the begining of a river
mouth
where a river meets a ocean or lake
source
where a stream begins
tributary
a small stream that flows into a large stream or river
watershed
land that water flows across or through
erosion
when soil or rock is loosened by water. In steep areas, streams erode the bottom of the channel and make it deeper. In flatter areas, streams erode the sides making it wider. As water flow decreases, the size of the sediments it can carry decreases.
runoff
water that flows over the land, it is affected by the amnount of vegetation, steepness of the land and the intensity of the rain
erosion and deposition
two processes that change the shape of earth
estuary
where salt and freshwater mix
2 ways people can harm the heath of the estuary
building dams and pollution