click below
click below
Normal Size Small Size show me how
PCS Earth Science
Chapter 9 Vocabulary - Surface Water
Term | Definition |
---|---|
bed load | sand, pebbles, and boulders that are moved along the bed of a stream and that are too heavy to be carried in suspension |
divide | high area of land that separates two watershed areas (example: the Continental Divide) |
floodplain | a low plain adjacent to a river that is formed chiefly of river sediment and is subject to flooding |
solution | a mixture of two disolveable materials |
watershed | a drainage basin for any body of water |
meander | a bend or curve in a stream channel |
stream bank | land bordering the edges of a river or stream |
eutrophication | process by which a body of water becomes too rich in dissolved nutrients, leading to plant growth that depletes oxygen |
wetland | a land area that is covered with a shallow layer of water during some or all of the year |
transpiration | evaporation of water from the leaves of a plant |
suspension | if the particles in a solvent are so large that they settle out unless the mixture is constantly stirred or agitated |
discharge | an outflow of water from a stream, pipe, groundwater, aquifer, or watershed; the opposite of recharge |
flood | an overflowing of water in a normally dry area |
runoff | water that flows over the ground surface rather than soaking into the ground |
stream channel | the portion of a stream with the greatest depth. The path along which a stream is currently flowing on a flood plain |
delta | a landform made of sediment that is deposited where a river flows into an ocean or lake |
rejuvenation | process during which a stream resumes downcutting toward its base level, increasing its rate of flow |