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Erosion
Erosion
20
Science
7th Grade
01/18/2011

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Term
EROSION
Definition
The process in which weathered particles are picked up and moved to another place
Term
DEPOSITION
Definition
The process where sediment is placed in a new location
Term
TILL
Definition
This is the sediment left after a glacier retreats
Term
MASS WASTING
Definition
The downhill movements of masses of rock and soil
Term
ROCKFALL
Definition
Individual blocks of rock falling
Term
ROCKSLIDE
Definition
Large mass of rock slides as a unit down a slope
Term
MUDFLOW
Definition
Debris (rock, soil, and plants) falls or slides down a hill when mixed with a lot of water
Term
SLUMP
Definition
A slide of loose debris that moves as a single movement (not as muddy as a mudflow)
Term
CREEP
Definition
Slow mass movement of soil or debris
Term
DRAINAGE BASIN
Definition
The area of land where water drains into a stream system
Term
DIVIDE
Definition
A ridge from which water drains to one side or the other
Term
LONGSHORE DRIFT
Definition
The zigzag movement of sand along a beach
Term
LONGSHORE CURRENT
Definition
The movement of water along a shore as waves strike the shore at an angle
Term
SANDBAR
Definition
A ridge of sand built up by the action of waves and currents
Term
BARRIER ISLAND
Definition
A long, narrow island that develops parallel to a coast
Term
SAND DUNE
Definition
A mound of sand built up by wind
Term
DESERT PAVEMENT
Definition
This is left after a lot of wind has eroded the surface of land
Term

VALLEY GLACIERS

ALPINE GLACIERS

Definition
These glaciers form in mountains and flow down through valleys
Term
CONTINENTAL GLACIERS
Definition
These glaciers are ice sheets that can cover entire continents
Term
MORAINE
Definition
This is formed when till is left after a glacier retreats (melts)
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