GS PrelimsGeography (Physical)Solar Radiation2023

Consider the following statements : 1. Statement-I : The temperature contrast between continents and oceans is greater during summer than in winter. 2. Statement-II: The specific heat of water is more than that of land surface. Which one of the following is correct in respect of the above statements?

A

Both Statement-I and Statement-II are correct and Statement-II is the correct explanation for Statement-I

B

Both Statement-I and Statement-II are correct and Statement-II is not the correct explanation for Statement-I

C

Statement-I is correct but Statement-II is incorrect

D

Statement-I is incorrect but Statement-II is correct

Correct Answer: Option D

Explanation

1. Statement-I claims the temperature contrast between continents and oceans is greater in summer than in winter. Due to the lower specific heat of land, continents experience greater temperature extremes than oceans. In winter (especially in mid-high latitudes), continents become significantly colder than the relatively warmer oceans. In summer, continents become hotter than the relatively cooler oceans. The magnitude of the temperature contrast is generally considered greater during the winter (very cold land vs. cool/mild ocean) than during the summer (hot land vs. warm ocean). Therefore, Statement-I is incorrect. 2. Statement-II states that the specific heat of water is higher than that of the land surface. This is factually correct. Water requires more energy to heat up and releases more energy when cooling down compared to land, leading to more moderate temperatures over oceans. 3. Since Statement-I is incorrect and Statement-II is correct, option (D) is the correct choice.

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