Allied & ICAR Exam Bank • ALLIED_1158 MCQ • 1 Mark

Section 4: Soil and Water Conservation Engineering

Soil Erosion Mechanics and USLE

Subtopic: Wind Erosion Mechanics

Question Statement:

In wind erosion mechanics, which transport process accounts for 50% to 75% of total soil movement by wind?

Options:

  • (A) Saltation (grain diameter 0.1 to 0.5 mm)
  • (B) Suspension (grain diameter < 0.1 mm)
  • (C) Surface creep (grain diameter > 0.5 mm)
  • (D) Abrasion

Answer Key:

A

Step-by-Step Solution & Explanation

Saltation moves $50\%\text{ to }75\%$ of total wind-blown soil through bouncing particles ($0.1\text{ to }0.5\text{ mm}$), dislodging other particles into suspension and rolling larger ones in surface creep.
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