Water
Wind
Ice
Gravity
100
The boundary between land and a body of water.
What is a shoreline?
100
The movement of sand or other sediments by short jumps and bounces that is caused by wind or water.
What is saltation?
100
The rock material carried and deposited by glaciers.
What is a glacier drift?
100
Movement of a section of land down a slope.
What is mass movement?
200
An area of the shoreline made up of materials deposited by waves.
What is a beach?
200
A form of wind erosion in which fine, dry soil particles are blown away.
What is deflation?
200
Unsorted rock material that is deposited directly by a melting glacier.
What is a till?
200
Group of loose rocks that fall down a steep slope.
What is a rock fall?
300
The grinding and wearing away of rock surfaces through the mechanical action of other rock or sand particles.
What is abrasion?
300
A glacier deposit that has been sorted and layered by the action of streams or meltwater.
What is a stratified drift?
300
Sudden movement of rock and soil down a slope.
What is a landslide?
400
Very fine sediments deposited by the wind.
What is luess?
400
Flow of a mass of mud or rock and soil mixed with a large amount of water.
What is a mudflow?
500
A mound of wind-deposited sand that keeps its shape even though it moves.
What is a dune?
500
The slow downhill movement of weathered rock material.
What is a creep?
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