1. As they flow, rivers do 3 things:
Erosion
Transport
Deposition

2. Erosion and Weathering
Corrasion/Abrasion
Attrition
Solution/Corrosion
Hydraulic Action
Physical (Freeze-Thaw)
Biological
Chemical

3. Weathering (outside the river) and erosion are (in the river) separate processes. But they do work together to erode rivers.

4. What is a Drainage Basin?
The area of land drained by a river.

6. The Drainage Basin
The area where the river gets it water from – all rain that falls in it will find its way to the river.
The start of a river.
A smaller river which feeds into the main river.
An imaginary boundary dividing one drainage basin from another, usually a line of high land.
Confluence
Where the river meets the sea.
The point where two rivers meet.