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Earth Science
E.S. Chapter 6 Section 1-2
Term | Definition |
---|---|
97.2% | ____% is stored in oceans |
2.15% | ice sheets and glaciers account for ____% |
0.65% | ____% is divided by lakes, streams, groundwater |
water cycle | this unending circulation of earths water supply is the _____ _____ |
infiltration | __________ is the movement of surface water into rock or soil through cracks and pore spaces |
transpiration | plants also absorb water and release it into the atmosphere through __________ |
continents | precipitation exceeds evaporation over ________ |
oceans | over _______, evaporation exceeds precipitation |
velocity | _______ is the distance that water travels in a period of time |
gradient | ________ is the slope or steepness of a stream channel |
tributary | _________ is a stream that empties into another stream |
meander | _______ is a loop like bend in the course of a stream |
outer bank | a streams zone of maximum speed shifts toward its _____ ____ when a stream curves |
friction | the force that opposes the motion of one surface as it moves across another surface |
streams | _______ are earths most important agents of erosion |
suspension | most streams carry the largest part of their load in __________ |
bed load | ___ ____ is that part of a streams load of solid material that is made up of sediment too large to be carried in suspension |
capacity | ________ of stream is the maximum load it can carry |
deposition | __________ occurs as stream flow drops below the critical settling velocity of a certain particle size |
delta | _____ is an accumulation of sediment formed where a stream enters a lake or ocean |
floodplain | __________ is the flat, low-lying portion of a stream valley subject to periodic flooding |
flood | _____ occurs when the discharge of a stream becomes so great that it exceeds the capacity of its channel and overflows its banks |
drainage basin | ________ _____ is the land area that contributes water to a stream. it is also called a watershed. |
divide | an imaginary line called a _______ separates the drainage basins of one stream to another |