Tag: soil erosion (geo)

Questions Related to soil erosion (geo)

Soil transported by air is

biology the soil soil erosion (geo) soil erosion, soil conservation and uses of soil soil erosion and conservation

  1. Alluvial

  2. Colluvial

  3. Glacial

  4. Eolian

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Correct Option: D

Sheet erosion is due to

biology the soil soil erosion (geo) soil erosion, soil conservation and uses of soil soil erosion and conservation

  1. Fast running rivers

  2. Wind

  3. Heavy rains

  4. Occasional rains

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Correct Option: C
Explanation:

Sheet erosion is the uniform removal of soil in thin layers by the force of raindrops, heavy rain is responsible for sheet erosion.

So, the correct answer is 'Heavy rains'

In the hills, the soil erosion takes place due to rapid flow of rain water. It can be most effectively controlled by.

biology the soil soil erosion (geo) soil erosion, soil conservation and uses of soil soil erosion and conservation

  1. Channel sing the water

  2. Terrace cultivation

  3. Jhum cultivation

  4. Building dikes

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Correct Option: A

In our country, large patches of forests are being cleared for cultivation of crops. The environmental impact of such a practice will lead to

biology the soil soil erosion (geo) soil erosion, soil conservation and uses of soil soil erosion and conservation

  1. Soil erosion

  2. Soil conservation

  3. Soil pollution

  4. Soil fertility

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Correct Option: A
Explanation:

Soil erosion is washing away or blowing away the top layer of the soil. Plants in the forests are big and are present near to each other. During rain or wind, forest plants prevent the top layer of soil to be cleared. These plants keep the soil intact within their roots and do not let it to blow or washed away. But when such plants are cleared, nothing stops the wind or water to blow away or wash away the top soil layer. This leads to soil erosion. 

Which one of the following erosion processes is a natural process?

biology the soil soil erosion (geo) soil erosion, soil conservation and uses of soil soil erosion and conservation

  1. Geological erosion

  2. Accelerated erosion

  3. Gully erosion

  4. Rill erosion

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Correct Option: A
Explanation:
New soils can be formed through the slow weathering of the parent rock material, and from the deposition of air-borne or waterborne sediments. Under normal climate conditions, and with natural ground cover, soil erosion can often balance out with the rate of soil production. This is called natural, or geological erosion. Unfortunately, these geologic processes are very slow and are often overshadowed by the activities of man.
So the correct option is 'geological erosion'.

 

Farm land tends to erode most rapidly when planted with

biology the soil soil erosion (geo) soil erosion, soil conservation and uses of soil soil erosion and conservation

  1. Wheat

  2. Potato

  3. Saccharum

  4. Clover

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Correct Option: C
Explanation:

Farm land tends to erode more rapidly when continuously planted with sugarcane, as sugarcane requires high moisture and organic content. As the amount of moisture and organic content decreases the top layers of soil can be easily eroded by wind or water

So, the correct answer is 'Saccharum'

The best way to check soil erosion is by providing adequate trees and

biology the soil soil erosion (geo) soil erosion, soil conservation and uses of soil soil erosion and conservation

  1. Grass cover

  2. Manure

  3. Water

  4. Sand

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Correct Option: A

Material produced by weathering accumulates in

biology the soil soil erosion (geo) soil erosion, soil conservation and uses of soil soil erosion and conservation

  1. Sedimentary Rocks

  2. Depositional basins

  3. Basins

  4. Igneous rocks

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Correct Option: B

Removal of the soil by the action of wind and water is known as 

evs - i the soil soil erosion (geo) soil erosion, soil conservation and uses of soil soil erosion and conservation sustainability of natural resources adaptations - mangrove swamps, fast flowing rivers and treetops halophiles

  1. Erosion

  2. Fossilization

  3. Leaching

  4. Calcification

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Correct Option: A
Explanation:

The top layer of the soil is the vital component, since all the nutrients required by plants are present in this layer. The loss of topsoil or disturbance of soil structure is known as soil erosion or land erosion. Water erosion is the removal of soil from the lands surface by running water, including runoff from melted snow and ice. Soil erosion by wind is common in dry arid regions where soil is chiefly sandy and the vegetation is very poor or even absent. Fossilization is the alteration of an organism's remains, impressions or activities by physical, biological or chemical changes retaining the original material in some form. Leaching is the process of extracting minerals from a solid by dissolving them in a liquid, either in nature or through an industrial process. Calcification is the accumulation of calcium salts.

Therefore, the correct answer is option A.

To prevent soil erosion, a farmer plants a hedge across a field. This method works because

biology the soil soil erosion (geo) soil erosion, soil conservation and uses of soil soil erosion and conservation

  1. The hedge prevents the soil from direct impact of rainwater.

  2. The roots of plants prevent the soil erosion.

  3. The hedge absorbs minerals from the soil, which makes it most compact.

  4. None of the above.

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Correct Option: B
Explanation:

The vetiver grass is grown as a narrow hedge row across the slope of the land that slows down rainfall runoff velocity and filters out soil particles. The vetiver hedges can block the passage of soil. They can keep topsoil on site and, over time, retard most surface erosion. Hedges of this deeply rooted perennial are capable of catching eroded soil and helping to build up terraces that stabilize the site. 

Therefore, the correct answer is option B.