Chapter 8 Erosion Flashcards
A slide of large masses of snow and ice and mud down a mountain.
Avalanche
The grinding and wearing away of rock surfaces
through the mechanical action of other rock or sand particles.
Abrasion
A bowl-shaped hollow eroded by a glacier.
Cirque
A large ice sheet that covers a continent.
Continental Glacier
The slow downhill movement of weathered rock material.
Creep
Erosion of soil as a consequence of sand and dust and loose rocks being removed by the wind.
Deflation
A long mound of till that is smoothed in the direction of the glacier’s flow.
Drumlin
A hill or ridge of sand piled up by the wind.
Dune
Long ridge of material deposited by a meltwater stream flowing beneath a glacier.
Esker
A large sheet or stream of ice formed in an area where the temperature remains below or near freezing and more snow accumulates in winter than melts in summer.
Glacier
A side valley at a higher elevation above a u- shaped valley.
Hanging Valley
Glaciers carve away the sides of a mountain resulting in a peak.
Horn
Cone shaped deposit of sediment from a glacier.
Kame
A bowl-shaped depression that was formed by a a glacier and then became filled with water.
Kettle Lake
The sudden movement of rock and soil down a slope.
Landslide
A wind-formed deposit made of fine particles of clay and silt.
Loess
Any one of several processes by which gravity moves sediment downhill.
Mass Movement
A ridge formed by the till deposited at the edge of a glacier.
Moraine
The rapid downhill movement of a mixture of water, rock, and soil.
Mudflow
Sediment deposited in front of a glacier by streams of meltwater.
Outwash
Area in front of a glacier in which melt water from the glacier has carried & deposited an abundance of sorted material.
Outwash Plain
A large mass of rock and soil suddenly slip down a slope.
Slump
Unsorted rock material that is deposited directly by a glacier.
Till
A long, narrow glacier that forms when snow and ice build up in a mountain valley.
Valley glaciers (Alpine)
