![]() You need to be able to explain how they form. Most erosional landforms in a river are found in the Upper Course Erosional Landform- is a feature on earth made by erosion Landform is a natural feature of the earth’s surface you can name.This is called deposition.Įrosional landforms in a river- Interlocking spurs, waterfalls and gorgesĪn erosional landform? What does this mean? ![]() When a river looses energy it drops what it is carrying. ![]() It is carried in four different ways by the river depending on its size and the material is.ġ) Traction = Boulders and pebbles are rolled along the river bed at times of high dischargeĢ) Saltation = Sand sized particles are bounced along the river bed by the flow of waterģ) Suspension = Fine clay and sand particles are carried along within the water even at low dischargesĤ) Solution= Some minerals dissolve in water such as calcium carbonate. Depending on the river’s discharge (amount of water in a river at a given time), it can carry more or less load. This load is all different sizes and shapes and materials. The materials that are carried by the river are known as a river’s load. Once material has been eroded by the river, it is often carried along in the river itself. The acids in the water slowly dissolve the bed and the banks. Corrosion: This is the chemical action of river water.Attrition: Material (the load) carried by the river bump into each other and so are broken down and smoothed.Abrasion : This is the process by which the bed and banks are worn down by material in the river (load).Hydraulic Action: This process involves the force of water pushing air into the cracks of the beds and banks which forces them apart.Processes in a river- erosion, transportation and depositionĪ river flows along its channel made up of its bed and banks.Ī river is constantly eroding its bed and banks in four different ways Watch the following you tube clip to remind you about how the River Severn changes from its source to its mouth. ![]() Look at the diagram below, showing how a river changes along its long profile, and what a cross profile would be like for each stage.
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