The typical characteristics of convective showers is that they are of
- AHigh intensity and long duration
- BHigh intensity and short durationCorrect
- CLow intensity and long duration
- DLow intensity and short duration
Solution
Concept
Convective precipitation occurs when warm air rises rapidly due to heating of the ground, leading to intense but brief rainfall.
Step-by-step solution
1. Identify the type of rainfall mentioned: Convective showers. 2. Recall how convective rain forms: The sun heats the ground, which heats the air above it. This warm air rises quickly (convection). 3. Understand the result: Because the air rises very fast, it cools and forms clouds quickly, leading to heavy rain. 4. Note the duration: Since these are localized pockets of rising air, the rain happens over a small area and ends quickly. 5. Combine the characteristics: High intensity (heavy rain) and short duration (brief time). Answer: (B) High intensity and short duration
Explanation
Convective showers are caused by the upward movement of warm, moist air. This process is very fast, so the rain falls with great force (high intensity). However, because the moisture in the rising air column is used up quickly, the rain does not last long.
Why the other options are wrong
A: Long duration is typical of cyclonic or frontal rainfall, not convective. C: Low intensity is typical of light drizzle or steady frontal rain. D: While the duration is short, the intensity of convective rain is always high, not low.
Shortcut
Think of a summer afternoon thunderstorm: it rains very hard for a few minutes and then stops.
Common mistake
Students often confuse this with cyclonic or frontal rain, which can last for many hours.
Correct answer: B) High intensity and short duration