Isothermal Maps in January
Question
Consider the following statements: Statement-I: Thickness of the troposphere at the equator is much greater as compared to poles. Statement-II: At the equator, heat is transported to great heights by strong convectional currents. Which one of the following is correct in respect of the above statements?
Options
Both Statement-I and Statement-II are correct and Statement-II explains Statement-I
Both Statement-I and Statement-II are correct, but Statement-II does not explain Statement-I
Statement-I is correct, but Statement-II is incorrect
Statement-I is incorrect, but Statement-II is correct
Explanation
Both statements are correct. The troposphere is roughly 8 km thick at the poles and up to 18 km at the equator. This greater thickness is directly caused by the intense insolation at the equator, which fuels strong convectional currents that transport heat and moisture to much greater vertical heights.
Answer: (a).
Question details
Year
2024
Paper
GS Paper 1
Question
Q4
Subject
Geography
Sub-topic
Climatology & Atmosphere
Type
Statement-based
Difficulty
Hard
Nature
Static
Source hint
NCERT Geography Cl.11 Ch.8
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