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Engineering Geology Practice Test: Internal Structure of the Earth
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Avg score: 0% • Most missed: “The depth at which the core layer starts and ends respectively is ____________”
Internal Structure of the Earth contains the crust, mantle and core. The Earth's internal structure is made up of four main layers: Inner core: A solid sphere made of iron and nickel metals, about 759 miles (1,221 kilometers) in radius. Outer core: Made of nickel, iron, and molten rock, temperatures here can reach up to 50,000 C. Mantle: Mostly solid rocks and minerals, but punctuated by malleable areas of semi-solid magma. Crust: The outside layer of the Earth, made of solid rock, mostly basalt and granite.  Each layer has a unique chemical composition and physical state, and can... Show more
Engineering Geology Practice Test: Internal Structure of the Earth
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25 Questions

1. What is the speed attained by the P-waves in the C-layer under the Continental crust?
2. The layer which is believed to be the source of volcanic activity is ________
3. What is the thickness of the crust under the mountainous areas and in particular the Himalayas?
4. The area not considered under the crust is ____________
5. The thickness of the 2 layers of the upper mantle is approximately said to be ________
6. There is a hypothesis that the inner core is made up chiefly of iron and nickel.
7. The depth up to which the mantle is said to exist is ________
8. The density of the oceanic layer in the crust is said to be ____________
9. The layer under the continental crust with the density of 2.4 to 2.6 g/cc is?
10. The exact nature of the mantle is completely understood.
11. The density of the Earth in the core immediately after the mantle is _______
12. The depth at which the core layer starts and ends respectively is ____________
13. The oceanic layer is the extension of C-layer of the continental crust and A and B-layer are mostly absent.
14. Which of the following is true about the inner core?
15. The depth at which the Mohorovicic discontinuity occurs is ____________
16. The least dense layer among the layers under the continental crust is ____________
17. The expansion of SIMA is ____________
18. The layer which does not transmit the S-waves is _______
19. Who was the first person to tell about the Core?
20. The granite layer in the crust is also referred to as ____________
21. What is the thickness of the inner core?
22. The discontinuity which marks the lower boundary of the crust is ______________
23. Which of the following is not true about Asthenosphere?
24. The layer which is said to support the slow moving tectonic plates is ________
25. The density of the Earth at its centre is said to be ________

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