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Q118
(CAPF/2012)
Geography › World Physical Geography › Earth interior structure
Answer Verified
Which one among the following statements is not correct?
Result
Your answer:
—
·
Correct:
C
Explanation
Statement 3 is incorrect because the mantle is not composed of the heaviest materials of the Earth. The Earth's interior is differentiated by density; the core, composed primarily of iron and nickel, contains the heaviest materials. The mantle consists of silicate rocks rich in iron and magnesium, with densities ranging from 2.9 to 5.7 g/cm³, which is significantly lower than the core's density [2]. Statement 1 is correct as the Mohorovicic discontinuity (Moho) separates the crust and mantle [4]. Statement 2 is correct because the mantle holds approximately 67% (more than two-thirds) of the Earth's total mass and 83% of its volume [2]. Statement 4 is correct as the inner core is a dense solid, while the outer core is liquid.
Sources
- [2] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 4: Earths Interior > The Mantle > p. 54
- [1] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 4: Earths Interior > The Mohorovicic (Moho) Discontinuity > p. 53
- [4] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 4: Earths Interior > 4.1. The Internal Structure of The Earth > p. 52
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