Allied & ICAR Exam Bank • ALLIED_0453 NAT • 2 Marks

Section 4: Soil and Water Conservation Engineering

Soil Erosion Mechanics and USLE

Subtopic: Soil Erosion Mechanics and USLE

Question Statement:

During a wind storm, soil grains moving by saltation have characteristic diameters predominantly in the range of $0.1\text{ mm}$ to $0.5\text{ mm}$. Grains moving by surface creep are larger, typically $0.5\text{ mm}$ to $1.0\text{ mm}$. The ratio of upper diameter of surface creep ($1.0\text{ mm}$) to lower diameter of saltation ($0.1\text{ mm}$) is:

Answer Key:

10

Step-by-Step Solution & Explanation

Ratio $= 1.0 / 0.1 = 10.0$.
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