Tag: external forces - responsible for changes

Questions Related to external forces - responsible for changes

Match the following:

List I                                List II
      (A)                                (B)
A - Land use            1 -  Prevent soil erosion 
B - Humus               2 - Land suitable for agriculture
C - Rock dams        3 - Productive use of land
D - Arable land       4 - Organic matter deposited on topsoil

geography external forces - responsible for changes the soil soil erosion (geo) soil erosion, soil conservation and uses of soil

  1. A- 3, B- 4, C-  1, D- 2

  2. A- 2, B- 4, C-  3, D- 1

  3. A- 3, B- 4, C-  2, D- 1

  4. A- 4, B- 3, C-  1, D- 2

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Correct Option: A
Explanation:

Answer: A- 3; B- 4; C- 1; D- 2

Land use: Land is used for different purposes such as agriculture, forestry, mining, building houses, roads and setting up of industries. This is known as land use.

Humus: Humus is defined as black organic matter formed in soil due to the decay of dead plant and animal matter.

Rock dams: These are the artificial embankments created by constructing mould of soil, clay, sand and rock. Main function is to prevent floods and soil erosion

Arable land: It is the land suitable for agriculture.

Rows of trees planted in the coastal areas to check the wind movement are called as intercropping.

geography external forces - responsible for changes the soil soil erosion (geo) soil erosion, soil conservation and uses of soil

  1. True

  2. False

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Correct Option: B
Explanation:

  • Row of trees planted in the coastal areas to check the wind movement is called Shelter Belts.

Human interference and changes in climate can maintain the ecosystem.

geography external forces - responsible for changes the soil soil erosion (geo) soil erosion, soil conservation and uses of soil

  1. True

  2. False

Show answer
Correct Option: B
Explanation:
False
Changes in climate and human interferences can cause the loss of natural habitats for the plants and animals, hence destroy the ecosystem.

Which of the following is the most effective method of soil conservation of hill slopes?

geography external forces - responsible for changes the soil soil erosion (geo) soil erosion, soil conservation and uses of soil

  1. Afforestation

  2. Construction of terraces

  3. Construction of check-dams

  4. Identification of the type of sand

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Correct Option: A

Which of the following is not an effective measure of soil conservation?

geography external forces - responsible for changes the soil soil erosion (geo) soil erosion, soil conservation and uses of soil

  1. Terracing

  2. Contour cultivation

  3. Afforestation

  4. None of the above

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Correct Option: D

Soil erosion caused by wind is high in the state of _______.

geography external forces - responsible for changes the soil soil erosion (geo) soil erosion, soil conservation and uses of soil

  1. Andhra Pradesh

  2. Madhya Pradesh

  3. Rajasthan

  4. Gujrat

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Correct Option: C
Explanation:

1:The denudation of the soil cover and subsequent washing down is described as soil erosion. Wind blows loose soil off flat or sloping land known as wind erosion. It is very high in the state of Rajasthan.
2:It causes soil loss, dryness and deterioration of soil structure, nutrient and productivity losses and air pollution. Suspended dust and dirt is inevitably deposited over everything.

Which of the following method is used in Western and Central Himalayas for the soil conservation?

geography external forces - responsible for changes the soil soil erosion (geo) soil erosion, soil conservation and uses of soil

  1. Terrace farming

  2. Strip cropping

  3. Shelter belts

  4. None of these

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Correct Option: A
Explanation:

Steps can be cut out on the slopes making terraces. Terrace cultivation restricts erosion. Western and central Himalayas have well developed terrace farming. 

Soil erosion is caused by _______.

geography external forces - responsible for changes the soil soil erosion (geo) soil erosion, soil conservation and uses of soil

  1. Water

  2. Wind

  3. Mining

  4. All of these

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Correct Option: D
Explanation:

Soil erosion causes by water, mining, air.

Which of the following promotes soil erosion?

geography external forces - responsible for changes the soil soil erosion (geo) soil erosion, soil conservation and uses of soil

  1. Overgrazing

  2. Terrace farming

  3. Wind breaks

  4. Conservation tillage

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Correct Option: A
Explanation:

Human activities like deforestation, overgrazing, construction and mining etc. lead to soil erosion. 

Terracing helps soil conservation in ___________.

geography external forces - responsible for changes the soil soil erosion (geo) soil erosion, soil conservation and uses of soil

  1. Plains

  2. Deserts

  3. Hilly areas

  4. Wet areas

Show answer
Correct Option: C
Explanation:

A terrace in agriculture is a piece of sloped plane that has been cut into a series of successively receding flat surfaces or platforms, which resemble steps, for the purposes of more effective farming. This method is called terracing. It is very useful in soil conservation in hilly or mountain areas.