Question

Match LIST I with LIST II
\[ \begin{array}{|l|l|} \hline \textbf{LIST I} & \textbf{LIST II} \\ \hline A. \ \text{Point of inflection} & I. \ \text{Rainfall factor} \\ B. \ \text{Recording raingauge} & II. \ \text{Hydrograph} \\ C. \ \text{Erosivity} & III. \ \text{Impact of falling rain drops} \\ D. \ \text{Splash erosion} & IV. \ \text{Tipping bucket} \\ \hline \end{array} \]
Choose the correct answer from the options given below:

• A. A-II, B-I, C-III, D-IV
• B. A-II, B-IV, C-I, D-III
• C. A-I, B-II, C-III, D-IV
• D. A-I, B-III, C-II, D-IV

Hint:

Link key concepts: \textbf{Splash erosion} is caused by raindrop \textbf{impact}. The measure of this impact is \textbf{Erosivity}. The hydrograph shows the result of the rain, with a key feature being the \textbf{point of inflection}. The rain is measured by a \textbf{recording raingauge}, such as a \textbf{tipping bucket}.

Answer 1

The Correct Option is B

Step 1: Match each term in LIST I with its correct association in LIST II.
- A. Point of inflection: On a runoff II. Hydrograph, the point of inflection on the falling limb marks the point where the contribution from surface runoff ceases and the flow is entirely composed of baseflow.
- B. Recording raingauge: This type of raingauge records rainfall depth over time. A common mechanism is the IV. Tipping bucket, where a small bucket tips and sends an electronic signal each time it fills with a known amount of rain (e.g., 0.2 mm).
- C. Erosivity: This is the potential ability of rainfall to cause erosion. It is a measure of the kinetic energy and intensity of a storm, often called the I. Rainfall factor (the 'R' factor in the USLE).
- D. Splash erosion: This is the detachment of soil particles caused by the III. Impact of falling rain drops on the soil surface.
Step 2: Compile the correct pairings.
- A \(\rightarrow\) II
- B \(\rightarrow\) IV
- C \(\rightarrow\) I
- D \(\rightarrow\) III
This combination corresponds to option (B).