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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: Hydraulic action - This is the ...

  3. As a river travels downstream, it erodes the landscape. Erosion is when land is worn away by another material. It's a natural process that's been going on for millions...

  4. 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: Hydraulic action - This is the...

    • What Is Abrasion Or Corrasion?
    • What Is Attrition?
    • What Is Hydraulic Action?

    Abrasion, also known as corrasion, is when boulders and stones wear away the river banks and bed. Angular rocks that have entered the channel recently are valuable tools of abrasion because they are more angular. Abrasion is responsible for the river channel’s lateral and vertical erosion (see below).

    Attrition is when sedimentparticles knock against the bed or each other and break, becoming more rounded and smaller as you move down the river.

    Hydraulic action is when the force of fast-flowing water hits the bed and banks and forces water and air into cracks in the bedrock. The repeated changes in air pressure cause the river bed to weaken. Hydraulic action causes vertical (downward) erosion in the upper part of the river and lateral (sidewards) erosion to the banks in the lower stretch ...

  5. There are four main processes of erosion that occur in rivers. These are: hydraulic action; abrasion / corrasion; attrition; and. corrosion. Hydraulic action. The pressure of water breaks away rock particles from the river bed and banks. The force of the water hits river banks and then pushes water into cracks.

  6. Apr 29, 2024 · The processes of erosion, transportation and deposition play a huge role in shaping river valleys. 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 ...

  7. River Landforms - Erosion. The changes in river channel characteristics lead to changes in the river landscape. The upland and lowland areas of rivers have distinctive landforms. Upland: Waterfalls. Gorges. V-shaped valleys. Interlocking spurs. These are landforms created through erosion. Waterfalls and gorges

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