click below
click below
Normal Size Small Size show me how
PCS Earth Science
Chapter 8 vocab
Term | Definition |
---|---|
mass movement | movement of loose sediments and rock down slope due to gravity |
creep | slow, steady downhill flow of loose material |
mud flow | fast moving mixture of mud and water |
land slide | rapid downhill movement of material large area looses layer of rock and rapidly down slope |
slump | material moves along a curved surface and rotates and slides down |
avalanche | movement of snow |
deflation | lowering of land surface due to wind erosion |
abrasion | Rocks and sediment grinding against each other wear away surfaces |
ventifact | rocks shaped by wind blown sediments polished smooth sides and sharp edges |
loess | wind blown thick silt deposits from glacial activity it makes very fertile soil |
glacier | mass movement of ice |
valley glacier | accumulations of snow and ice in the mountainous areas, flow very slowly |
continental glacier | cover much more area than valley, thickest in the center and tin at the edges |
cirque | deep depression scooped out by a valley glacier. |
esker | long winding ridge of layered sediments deposited by streams |