MCQ on Interior of the Earth | Quiz on Interior of the Earth | Geography UPSC Prelims

 1. Which one of the following is a direct source of information about the interior of the earth?

a) Earthquake waves

b) Volcanoes 

c) Gravitational force

d) Earth magnetism

Answer. b) Volcanoes 

2. Which one of the following is an indirect source of information about the interior of the earth?

a) Deep Ocean Drilling

b) Volcanoes 

c) Mining

d) Falling Meteorites

Answer. d) Falling Meteorites

3. Which one of the following describes the lithosphere:

a) upper and lower mantle 

b) crust and upper mantle

c) crust and core

d) mantle and core

Answer. b) crust and upper mantle

4. Which of the following is the thinnest layer of the earth?

a) Crust

b) Mantle

c) Outer Core

d) Inner core

Answer. a) Crust

5. Moho’s discontinuity is ----

b) the boundary between crust and Mantle

b) the boundary between Mantle and Core

c) the Boundary between the Inner core and Outer Core

d) Boundary between the upper and lower mantle

Answer. b) the boundary between crust and Mantle

6. Lehmann’s discontinuity is ----

b) the boundary between crust and Mantle

b) the boundary between Mantle and Core

c) the Boundary between the Inner core and Outer Core

d) Boundary between the upper and lower mantle

Answer. c) the Boundary between the Inner core and Outer Core

7.  Gutteberg’s discontinuity is ----

b) the boundary between crust and Mantle

b) the boundary between Mantle and Core

c) the Boundary between the Inner core and Outer Core

d) Boundary between the upper and lower mantle

Answer. b) the boundary between Mantle and Core

8. Repiti discontinuity is ----

b) the boundary between crust and Mantle

b) the boundary between Mantle and Core

c) the Boundary between the Inner core and Outer Core

d) Boundary between the upper and lower mantle

Answer. d) Boundary between the upper and lower mantle

9. Sometimes Core is also referred to as?

a) SiAl layer

b) SiMa layer

c) SiAl and SiMa layer

d) Nife layer

Answer. d) Nife layer

10. Which of the following layer is in liquid form?

a) Asthenosphere

b) Lower Mantle

c) Upper Core

d) Lower Core

Answer. c) Upper Core

11. Which of the following layer is in semi-liquid form?

a) Asthenosphere

b) Lower Mantle

c) Upper Core

d) Lower Core

Answer. a) Asthenosphere

12. Continental crust is also referred to as?

a) SiAl 

b) SiMa 

c) SiAl and SiMa 

d) Nife

Answer. a) SiAl 

13. Oceanic crust is also referred to as?

a) SiAl 

b) SiMa 

c) SiAl and SiMa 

d) Nife

Answer. b) SiMa 

14. The innermost layer of the earth is

a) Crust 

b) Core

c) Mantle

d) Asthenosphere

Answer. b) Core

15.  The thickest layer of the earth is

a) Crust 

b) Mantle 

c) Core

d) Asthenosphere

Answer. b) Mantle 

16. Thickness of the Crust in the Himalayan region is about

a) 65 km

b) 70 km

c) 100 km

d) 150 km

Answer. b) 70 km

17. Which element is the most abundant element found in the earth's crust?

a) Oxygen

b) Silicon

c) Iron

d) Aluminium

Answer. a) Oxygen ( 47 %)

18. Which element is the second most abundant element found in the earth's crust?

a) Oxygen

b) Silicon

c) Iron

d) Aluminium

Answer. b) Silicon ( 28 %)

19. Which layer of the earth is responsible for the Earth's magnetic field?

a) Crust

b) Mantle

c) Inner Core

d) Outer Core

Answer. d) Outer Core

20. Which element is the most abundant element found in the entire earth

a) Oxygen

b) Silicon

c) Iron

d) Aluminium

Answer. c) Iron ( 35%)

21.  Which element is the second most abundant element found in the entire earth

a) Oxygen

b) Silicon

c) Iron

d) Aluminium

Answer. a) Oxygen ( 30 %)

22. 

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