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Soil erosion is the removal of the top soils by action of moving water, glaciers, wind and mass movement.
Splash erosion is caused by heavy sudden rainstorms. Rain drops hit and loosen unconsolidated soil particles. The impact of the heavy drops throws the soil particles away.
Rill erosion occurs when the rate of rainfall exceeds the rate of infiltration. The rain water forms small channels called rills.
Gully erosion occurs when moving water or glacier cuts down deep and large channels by widening the existing rills.
Sheet erosion is the even removal of the top soils by rain water moving down slope immediately after heavy pours.
Wind erosion is the process by which wind carries away fine soil particles and deposits them elsewhere.
Mass wasting
Mass wasting especially landslides and soil creep can accelerate soil erosion.
The slope
The rate of soil erosion is determined by the nature of the slope. Steep slopes accelerate erosion. Gentle slopes experience less erosion.
Nature of the soil texture.
The fineness or coarseness of the soil texture can accelerate soil erosion. Areas with volcanic ash which form fine textured soils are vulnerable to soil erosion.
Faimus answered the question on March 17, 2018 at 09:33
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(i) The following factors cause soil degeneration.
Leaching
Continuous cropping
Change of pH
(ii) Describe how these factors influence soil degeneration.
Date posted: March 17, 2018. Answers (1)
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(b) Name and describe the four soil layers (Solved)
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Date posted: March 16, 2018. Answers (1)
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Soil texture
Soil porosity
Soil permeability
(b) What is the importance of soil acidity
Date posted: March 16, 2018. Answers (1)
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(b) Give the four types of soil structure. (Solved)
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Date posted: March 16, 2018. Answers (1)
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Date posted: March 16, 2018. Answers (1)
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Living organisms
Relief
Time
Date posted: March 16, 2018. Answers (1)
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(a) Describe the following leaching processes leading to the formation of various soil types.
Ferralisation
Eluviation
Illuviation
Podzolisation
Calcification
Ribification
Salinisation
(b) Differentiate between eluviation and illuviation.
Date posted: March 16, 2018. Answers (1)
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Date posted: March 16, 2018. Answers (1)
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Date posted: March 16, 2018. Answers (1)
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Give any five reasons why humus content in soil is important.
Date posted: March 16, 2018. Answers (1)
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(b) Give the four components of soil
(c) Define the term land
(d) Give any two differences between land and soil.(Solved)
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(b) Give the four components of soil
(c) Define the term land
(d) Give any two differences between land and soil.
Date posted: March 16, 2018. Answers (1)
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Give any three ways in which glacial features are not useful.
Date posted: March 16, 2018. Answers (1)
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Date posted: March 16, 2018. Answers (1)
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Date posted: March 16, 2018. Answers (1)
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Date posted: March 16, 2018. Answers (1)
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(b) Give any three locations where drumlins are found. (Solved)
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(b) Give any three locations where drumlins are found.
Date posted: March 14, 2018. Answers (1)
- (a) Describe the following glacial features
Boulder train
Terminal moraine
Drumlins
(b) Give an example of a boulder train (Solved)
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Boulder train
Terminal moraine
Drumlins
(b) Give an example of a boulder train
Date posted: March 14, 2018. Answers (1)
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(b) Describe the two types of till
(c) Describe the features that are formed as a result of till(Solved)
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Date posted: March 14, 2018. Answers (1)
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Date posted: March 14, 2018. Answers (1)