The source of the River Conwy is high in the Snowdonian Mountains. The river has eroded away the landscape by hydraulic action, abrasion and attrition. Waterfalls are formed where hard rock lies over a softer rock. Gorges are found where waterfalls retreat upstream. Meanders and floodplains are found in the lower course of the river. Estuaries are found at the mouth of the river. The river transports material when it has enough energy. When the river loses energy, it deposits the material it has been carrying. Ordnance Survey mapping © Crown Copyright.

Students are given a simple diagram or sequence of diagrams that show a waterfall and a meander. They are shown the clip and need to identify key pieces of information that explain the features of the diagram/sequence. This may need to be shown twice or broken down into chunks - perhaps used in two separate lessons about erosion and deposition.