| A | B |
|---|
| Runoff | is the water that flows off the area after a rain |
| Rill | begins when a small stream forms during a heavy rain |
| Gully | a rill that has become larger |
| Sheet Erosion | rainwater flows over a flat area and moves sediment down slope |
| Tributary | smaller streams that flow into larger ones |
| Valley | is a depression within one direction |
| Waterfall | resulting from water, flowing over an erosion-resistant rock formation that forms a or sudden break in elevation |
| Floodplain | is flat or nearly flat land adjacent to a stream or river that experiences flooding |
| Meander | generally is a bend in a watercourse |
| Oxbow Lake | is a U-shaped lake water body formed when a wide meander from the main stem of a river is cut off to create a lake |
| Alluvial Fan | deposits from a stream, occurs in dry areas shaped like a triangle |
| Delta | the sediments from a river or stream are deposited in an ocean, gulf, or lake |
