| A | B |
|---|
| parabolic dunes | dunes that form where vegetation holds the points of crescent-shaped dune in place |
| loess | windblown deposit that packs into a dense mass without layering |
| oasis | develops when wind erodes to a dept where water is reached |
| residual soils | soils that form by gradual weathering of parent rock |
| slump | mass movement in which resistant rock or other material is carried downslope by a weak layer |
| desert pavement | material that is too heavy to be moved by the wind |
| star dune | dune formed when the wind blows in at least 3 directions |
| talus | material that accumulates at the base of a hill or mountain |
| decomposition | chemical weathering |
| leaching | occurs as water moving downward through a soil horizon disoolves soil components and carries them to deeper layers |
| disintegration & decomposition | two types of weathering |
| disintegration | physical weathering |
| quartz | rock most resistant to weathering |
| erosion | process by which earth materials are carried away |
| weathering | wearing away of the land |
| wind, water, glaciers, gravity | 4 erosional processes |
| rockfalls | large masses of fallen rock |
| landslide | rapid movement of large amounts of material |
| mudflows | rapid movements that occur after heavy rainfalls; most likely to occur in semi-arid regions |
| slump | mass movement that occurs when loose materials slip downward a short distance; scars land |
| soil | mixture of weathered rock and organic materials |
| soil profile | vertical section of soil horizons |
| residual soils | soils formed in place by gradual weathering of parent rock |
| leaching | soil components are dissolved by water & carried downward |
| transported soil | soil that is removed from one area and deposited in another |
| deflation | removal of loose material from ground surface |
| abrasion | scouring action of particles carried by the wind |
| sand dune | most common type of wind deposit |
