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Consider the following statements

,

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?

(a)

Both Statement-I and Statement-II are correct and Statement-II explains Statement-I*

(b)

Both Statement-I and Statement-II are correct, but Statement-II does not explain Statement-I

(c)

Statement-I is correct, but Statement-II is incorrect

(d)

Statement-I is correct, but Statement-II is incorrect

Answer:

(a)

Explanation

“The troposphere is the lowest layer of Earth’s atmosphere, extending from the surface up to about 8-10 km at the poles and around 16-18 km at the equator. This variation in thickness is primarily due to the higher temperatures at the equator, causing the air to expand and the troposphere to extend higher. Additionally, the centrifugal force resulting from Earth’s rotation is greatest at the equator, contributing to the atmospheric bulge.”Class 11 Geography NCERT (Chapter: Composition and Structure of Atmosphere):