| A | B |
|---|
| landslide | a rapid downhill movement of rock and soil |
| mass wasting | refers to any downhill movement of soil or rock due to gravity |
| mudflow | movement of earth in a fluidlike way in steep, wet areas |
| floodplain | flat, low area near a river that is covered with sediment when the river overflows |
| fault | large break in the crust along which movement has occurred |
| creep | slow, flowing movement of soil |
| freezing and melting of water | causes soil to creep |
| acid dissolves limestone(chemical weathering) | to produce a sinkhole |
| crossbraces | makes buildings more resistant to Earthquakes |
| earthquake | produces waves in the Earth's surface |
| runoff | occurs when rain falls on saturated soil |
| physical weathering | the mechanical breakdown of rock and soil |
| drainage basin | area from which streams and rivers collect runoff |
| divide | separating feature between two drainage basins |
| flood | happens when a stream overflows its banks |
| inside curves of rivers | least amount of erosion occurs |
| mudflows, landslides, creep | types of mass wasting |
| soil slides easily past each other | unstable soils of physical weathering |
| the Continental Divide | separates the Mississippi River basin from those of western rivers |
| vegetation, hardness of soil, soil type | determines how much water the soil can hold |
