Here's a way of checking yourself regarding GCSE Geography.
1. River Erosion
Let's start with river erosion. There are a lot of rivers round here that flow into the River Ribble, that gives its name to our lovely valley.
Let's look at one of those rivers to see where and how river erosion occurs
2. River Transport
Rivers pick up and carry material as they flow downstream. This is generally called 'silt' and is the result of soil erosion up stream. The river energy carries lighter particles faster than heavier ones.