| A | B |
|---|
| erosion | The process by which water, ice, wind, or gravity moves weathered rock in soil. |
| mass movement | any one of several processes by which gravity moves sediment downhill. |
| deposition | Process in which sediment is laid down in new locations. |
| sediment | Earth materials deposited br erosion. |
| rill | A tiny groove in soil formed by erosion. |
| gully | A large channel in soil formed by erosion. |
| stream | A channel through which water is continually flowing downhill. |
| river | A large stream. |
| groundwater | Water that fills the cracks and spaces in underground soil and rock layers. |
| alluvial fan | A wide, sloping deposit of sediment formed where a stream leaves a mountain range. |
| stalagmite | A cone-shaped calcite deposit that builds up from the floor of a cave. |
| stalactite | A calcite deposit that hangs from the roof of a cave. |
| delta | A landform made of sediment that is deposited where a river flows into an ocean or lake. |
| tributary | A stream that flows into a larger stream. |
| flood plain | Wide valley through which a river flows. |
