weathering, erosion, and deposition

2. excess water
6. material carried by a stream
8. the level or nearly level land that borders a river and is covered by river water in a floodtime
11. occurs when rainwater or melted ice soaks into tiny cracks in a rock and freezes
12. when wind or running water carries away rock fragments
13. networks of underground cavities caused by erosion
14. feed into the river at various points along its course, increasing the amount of water it carries

1. involves the breaking or peeling away of rock in layers.
3. when eroded rock fragments are eventually set down in a new location
4. source of the river
5. when running water eventually carves a channel, or gully, in the ground that cannot be repaired by ordinary cultivation
7. pools up on the ground and runs downhill, stripping away a thin sheet of topsoil
9. natural formed ridge at the edge of a river
10. winding, looping curves in a river
15. large streams that carry water from the mountains to the sea