Types of water erosion

There are seven types of water erosion.

  1. Raindrop erosion is caused from so splash brought about by the impact of falling raindrops. Climate, rainfall and temperature, soil, topography, particularly steepness and length of slope, and the vegetative cover are responsible for raindrop erosion.
  2. Sheet erosion is the removal of erosion is the removal of surface soil by running water, with the formation of normal cultivation.
  3. Fill erosion is more apparent than sheet erosion.
  4. Gully erosion is the removal of soil by running water, with the formation of channels that cannot be smoothened out completely by normal agricultural operation or cultivation.
  5. Gill erosion is an advanced stage of Fill erosion.
  6. Stream channel erosion is the scouring of material from the water channel and the cutting of banks by flowing or running water. This type of erosion occurs at the lower end of stream tributaries and to stream that have almost a continuous flow and relatively flat gradients. Landsides cause slip erosion with big masses of soil and rock bodies slipping down, damaging fields.
  7. Seashore erosion is caused by the shrinking action of strong waves.

Erosion by Insolation

  • In hot countries, the surface of rocks becomes very hot during the day because of intense heat and sun. the crust of the earth beneath the rocks consists of different minerals, which expand at different rates because of heat and sun.
  • One mineral expanding more quickly than other, causes the rock to burst. This gives rise to cracks. During night, the rocks get cold, and thus contract. This process is repeated day after day, so that cracks increase in size and gradually the rocks break up into small pieces.
  • The action of sun is called insolation and is important in hot and dry countries.

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