With reference to wind erosion consider the following statements 1 Deflation is the lifting and blow...........

General Studies ( Prelim) Geography

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With reference to wind erosion, consider the following statements:

1. Deflation is the lifting and blowing away of loose materials from the ground.

2. Abrasion is the sand- blasting of rock surfaces by winds when they hurl sand particles against them.

Which of the statements given above is/are correct?

1 only

2 only

Both 1 and 2

Neither 1 nor 2

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Explanation:

Wind erosion is carried out in the following three ways

i) Deflation

ii) Abrasion

iii) Attrition

Deflation- Deflation involves the lifting and blowing away of loose materials from the ground. Such unconsolidated sand and pebbles may be carried in the air or rolled along the ground depending on the grain size.

Abrasion- The sand-blasting of rock surfaces by winds when they hur; sand particles against them is called abrasion.

Attrition- When wind-borne particles roll against one another in collision they wear each other away so that their sizes are greatly reduced and grains are grounded into millet seed sand.

Statement 1 is correct. Deflation is the lifting and blowing away of loose materials from the ground.

Statement 2 is correct. Abrasion is the sand- blasting of rock surfaces by winds when they hurl sand particles against them.