Across
- 3. Course: the mountain stage of a river with steep gradients and much erosion
- 5. The settling out of suspended particles from a body of water (or in some cases, very fine particles settled from the air or blown by the wind).
- 6. the break-down or decomposition of rock by biological, physical or chemical processes.
- 7. a smaller river that joins a larger one
- 10. the highland separating one river basin from another
- 11. the wearing away of the bed and banks of the river channel by abrasion, hydraulic action, solution and attrition.
- 14. where a river starts, usually in the mountains
- 15. Action: The sheer force of the water by itself can erode material from the bed and banks of the river channel.
- 16. a narrow neck of highland extending into a river valley, often forming the divide between two tributaries
Down
- 1. a steep-sided, narrow rocky valley marking the retreat of a waterfall
- 2. Course: the section of the river between the mountains and the lowland, where transport of eroded material is important and the river begins to cut sideways due to the reducing gradient.
- 4. form where the river meets a band of softer rock after flowing over an area of more resistant material. Waterfalls progressively cut back, leaving a gorge.
- 8. a bend in a river. The outside of the meander has the fastest flow and deepest water.
- 9. the speed of the water flow
- 12. a river mouth choked with sediment causing the main channel to split into smaller branching channels or distributaries.
- 13. where a river ends, at a lake or the sea.