Question:
Given below are two statements:
Statement (I): Erosivity can be defined as the potential ability of the rain to cause erosion.
Statement (II): Erodibility can be defined as the vulnerability or susceptibility of the soil to cause erosion.
In light of the above statements, choose the most appropriate answer from the options given below:
Given below are two statements:
Statement (I): Erosivity can be defined as the potential ability of the rain to cause erosion.
Statement (II): Erodibility can be defined as the vulnerability or susceptibility of the soil to cause erosion.
In light of the above statements, choose the most appropriate answer from the options given below:
Statement (I): Erosivity can be defined as the potential ability of the rain to cause erosion.
Statement (II): Erodibility can be defined as the vulnerability or susceptibility of the soil to cause erosion.
In light of the above statements, choose the most appropriate answer from the options given below:
Show Hint
To distinguish between the two terms:
Erosivity is the active, aggressive force of the rainfall.
Erodibility is the passive vulnerability of the soil.
Erosivity is the active, aggressive force of the rainfall.
Erodibility is the passive vulnerability of the soil.
Updated On: Jul 24, 2026
- Both Statement (I) and Statement (II) are correct.
- Both Statement (I) and Statement (II) are incorrect.
- Statement (I) is correct but Statement (II) is incorrect.
- Statement (I) is incorrect but Statement (II) is correct.
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The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept:
Water erosion is governed by the interaction between the erosive agent (rainfall) and the material being eroded (soil).
Soil conservation scientists use the terms "erosivity" and "erodibility" to distinguish between these active and passive forces.
Step 2: Detailed Explanation:
Let us evaluate Statement (I):
Rainfall erosivity (the R-factor in USLE) is the potential ability of rain to cause soil erosion.
It is determined by the physical characteristics of the rainfall, including raindrop size, terminal velocity, total kinetic energy, and maximum 30-minute intensity (\( I_{30} \)).
Erosivity is purely a climatic factor and is independent of soil properties.
Thus, Statement (I) is correct.
Let us evaluate Statement (II):
Soil erodibility (the K-factor in USLE) represents the soil's inherent susceptibility or vulnerability to detachment and transport by erosive agents.
It depends entirely on the soil's physical properties, including texture (sand, silt, clay ratios), organic matter content, soil structure, and permeability.
For example, soils rich in silt and very fine sand are highly erodible, whereas high clay and organic matter content reduce erodibility by binding soil particles together.
Thus, Statement (II) is correct.
Step 3: Final Answer:
Both Statement (I) and Statement (II) are correct.
Water erosion is governed by the interaction between the erosive agent (rainfall) and the material being eroded (soil).
Soil conservation scientists use the terms "erosivity" and "erodibility" to distinguish between these active and passive forces.
Step 2: Detailed Explanation:
Let us evaluate Statement (I):
Rainfall erosivity (the R-factor in USLE) is the potential ability of rain to cause soil erosion.
It is determined by the physical characteristics of the rainfall, including raindrop size, terminal velocity, total kinetic energy, and maximum 30-minute intensity (\( I_{30} \)).
Erosivity is purely a climatic factor and is independent of soil properties.
Thus, Statement (I) is correct.
Let us evaluate Statement (II):
Soil erodibility (the K-factor in USLE) represents the soil's inherent susceptibility or vulnerability to detachment and transport by erosive agents.
It depends entirely on the soil's physical properties, including texture (sand, silt, clay ratios), organic matter content, soil structure, and permeability.
For example, soils rich in silt and very fine sand are highly erodible, whereas high clay and organic matter content reduce erodibility by binding soil particles together.
Thus, Statement (II) is correct.
Step 3: Final Answer:
Both Statement (I) and Statement (II) are correct.
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