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Oceanography
5/11/12
28
Science
9th Grade
05/09/2012

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Cards

Term
Stream that flows into a lake or larger stream
Definition
tributary
Term
Drainage basin
Definition
Water shed
Term
What do water sheds do?
Definition
Divide water systems
Term
What watershed do we live in?
Definition
Delaware
Term
Path that a stream follows
Definition
Channel
Term
The slope of a river
Definition
Gradient
Term
Amount of water flowing
Definition
Discharge
Term
What is discharge measured in?
Definition
volume per unit time
Term
Amount of material carried
Definition
Load
Term
Very small sediments
Definition
Dissolved load
Term
Particles small enough to be carried
Definition
Suspended load
Term
Big sediments that drift on the bottom
Definition
Bed load
Term
What did Davis believe?
Definition
That rivers erode in the same way at the same rate.
Term
How do rivers actually erode (despite Davis's theory)
Definition
Different materials erode at different rates
Term
  • Channel deeper than wide
  • High gradient
  • few tributaries
  • low discharge
Definition
Youthful
Term
Where are Youthful Rivers?
Definition
In Mountains
Term
  • Channel wider than deep
  • low gradient
  • many tributaries (drains larger area)
  • large discharge
Definition
Mature River
Term
Where are Mature Rivers?
Definition
Valleys
Term
  • low gradient
  • very wide
  • bends/meanders
Definition
Old River
Term
Where are Old rivers?
Definition
In plains
Term
Any river altered by uplift
Definition
Rejuvinated River
Term
Places where the current is slower and things get deposited
Definition
Placer diposit
Term
Fast current hits slow current and creates a fan of deposition
Definition
Delta
Term
High gradient hits low gradient and water dries on the land
Definition
Alluvial fan
Term
Forms from sediment deposited when river overflows bank
Definition
Floodplain
Term
Controls floods
Definition
Dam
Term
Helps keep river inside its banks
Definition
Levee
Term
What does a levee also do?
Definition
Redirects the water
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