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    • Erosion

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      • This process is known as erosion, and it’s where a rock’s journey downriver begins. After a rock has been dislodged from its former home, it becomes increasingly subject to the natural forces of wind and water. Over many years, the rock is washed downhill into stream beds and eventually into a river.
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  2. Erosion is the process that wears away the river bed and banks. Erosion also breaks up the rocks that are carried by the river. There are four types of erosion:

  3. Abrasion occurs when sediment carried by the water hits the river channel and removes material in a sandpapering effect. Attrition happens when stones carried by the water hit into each other,...

  4. Solution close solutionWhen some rocks (like limestone) are easily dissolved by the water and the tiny particles of rock are held up within the water (transportation). - minerals are dissolved...

  5. Aug 22, 2023 · Solution (or Corrosion): This is a chemical process where certain rock types, like limestone or chalk, dissolve in the river’s water. Over time, this process can erode the river bed and banks. Factors affecting river erosion include: Load: The heavier and more angular the material a river carries, the higher the chance of erosion.

  6. Corrasion: Rocks bounce against side and bottom of river and break off more material. Attriction: Rocks collide with each other and break up into smaller pieces. Transportation processes: Solution: Dissolved material being carried along by the river. Suspension: Small particles carried along by the river.

  7. Apr 29, 2024 · Erosion. This is the wearing away of rock. There are 4 specific processes that you need to know: Hydraulic action - this is the sheer force of fast-flowing water hits the river banks and bed and forces water into cracks. This compresses air in the cracks, and weakens the rock.

  8. Waterfalls form where there is a drop in the river bed from one level to another. This drop is often due to changes in the hardness of the rock, where hard rock overlies soft rock. Hydraulic action and abrasion are the main erosional processes. The soft rock erodes quicker, undercutting the hard rock and creating a plunge pool