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CBSE Class 6 Answered

how does water acts as an agent of  soil erosion 
Asked by soniadubey2105 | 04 Sep, 2020, 12:13: PM
answered-by-expert Expert Answer
The wearing away (due to the action of winds) and washing down of soil cover (due to running water) is known as soil erosion.
 
Soil Erosion by Water:
 
  • Gully Erosion: This occurs during heavy rainfall when running water cuts through the soil making deep channels. The land thus becomes unsuitable for cultivation and is known as bad land.
  • Rill Erosion: It occurs when runoff water forms small channels running down the slope. It is an intermediate stage between sheet and gully erosion.
  • Sheet Erosion: The washing away of the topsoil because of flowing of water as a sheet over large areas is known as sheet erosion.
  • Leaching: When soil is bare of any vegetation, nutrients present in the soil percolate below the soil because of heavy rainfall. It makes soil infertile.
  • Stream Bank Erosion: It occurs when streams of rivers change their course by cutting one bank and depositing the silt on the other bank of the river.
  • Sea or Shore Erosion: The powerful waves of the sea dash against the coast and break the cliff rocks. The fragmented material is then removed by the retreating sea waves. Eastern and western coasts have experienced this kind of soil erosion.
Answered by Ramandeep | 04 Sep, 2020, 05:12: PM
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