The annual range of temperature in the interior of the continents is high as compared to coastal areas. What is/are the reason/reasons?
- Thermal difference between land and water
- Variation in altitude between continents and oceans
- Presence of strong winds in the interior
- Heavy rains in the interior as compared to coasts
Select the correct answer using the codes given below.
Smart Elimination
The question is asking about high annual temperature range in continental interiors.
So we want reasons that INCREASE temperature difference: stronger heating & cooling and lack of moderation
Now evaluate each statement by common-sense climatic reasoning:
• Statement 1 – Thermal difference between land & water - Land heats/cools faster than ocean→ Correct (this is the MAIN reason)
• Statement 2 – Variation in altitude - This has no direct relation to coastal vs interior temperature range
Altitude affects overall temperature, not range difference
• Statement 3 and 4 are Illogical statements
Potential Trap
Assuming rainfall or winds are the *primary* cause of temperature range.
Answer Key & Explanation
Answer: AThe correct answer is Option A.
Explanation:
- Annual Range of Temperature: The difference between the hottest and coldest months.
- Continentality: The primary reason for high temperature range in the interior of continents is the difference in specific heat/thermal properties between land and water.
- Land heats up and cools down much faster than water. Coastal areas have a 'maritime effect' (moderated by the sea), leading to a low range. Interiors lack this moderation, leading to extreme heat and cold (high range).
- Other options: Altitude, winds, and rains are secondary or local factors, not the fundamental reason for the contrast between coastal and interior ranges.
Value Addition
- Specific Heat: Water has a higher specific heat than land.
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Foundational question based on core concepts.