Rivers - Landforms of Erosion
- 3. - Where water falls down a vertical drop in the channel.
- 4. A series of ridges projecting out on alternate sides of a valley and around which a river winds its course.
- 5. The type of valley found in the upper course of a river.
- 1. A steep-sided valley formed when a waterfall retreats.
- 2. Fast-flowing, turbulent sections of a river where the bed has a steep gradient.