Chapter 12 Flashcards
The flat-lying area surrounding a river channel is termed the
floodplain
The lowest elevation to which a stream can downcut is the
base level
Braided streams
consist of a series of intertwined channels that are overloaded with sediment
Within a meander, where is sediment most likely to be deposited?
on the inner banks of the meander
Sediment buildup on either side of a stream channel produces
natural levees
In the region immediately surrounding an isolated volcano, a _____ drainage network is expected.
radial
A meander that is cut off to become completely isolated from the main channel, but which retains water, is a(n) _____.
oxbow lake
Moving away from its headwaters, the flow of a stream becomes more
laminar
Most stream tributaries occur in which part of a river system?
Collecting System
Alluvial fans tend to form where
streams flow into dry basins in arid regions
How does water in a stream flow.
If velocity of River decreases- cant carry much sediment, more meanders
Increase velocity- River gets straighter, can carry more sediment
Fastest part of river?
Slowest?
Middle is fastest part of a river- less friction
Sides are slower- more friction
What does the shape of the land have to do with the groundwater?
More subtle but shape of land
How does groundwater erode rocks?
Dissolution
Where does groundwater discharge?
Springs, wells, geysers, stream, lakes
