CSS :: Internal Structure of Earth
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| 21. |
The fourth layer of ultra basic rocks is known as _____ layer. |
| A. |
Sedimentary |
B. |
Core |
| C. |
Mohorovic |
D. |
Gutenberg |
Answer: Option D
Explanation:
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| 22. |
Mesosphere extends up to _______ km: |
Answer: Option B
Explanation:
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| 23. |
________ is the least rigid sometimes described as plastic in nature. |
| A. |
Lithosphere |
B. |
Mesosphere |
| C. |
Asthenosphere |
D. |
None of these |
Answer: Option C
Explanation:
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| 24. |
Continental crust consists of _______ rocks. |
| A. |
Granite |
B. |
Basaltic |
| C. |
Acidic |
D. |
Basic |
Answer: Option A
Explanation:
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| 25. |
The fourth layer of earth described by Vander Gracht is ________ |
| A. |
Nucleolus |
B. |
Centrospheres |
| C. |
Core |
D. |
None of these |
Answer: Option A
Explanation:
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| 26. |
_______ of outer layer prevents the core from becoming a liquid or gas. |
| A. |
Density |
B. |
Molten form |
| C. |
Great weight & pressure |
D. |
Heat & Weight |
Answer: Option C
Explanation:
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| 27. |
Silicon found in earth crust________. |
Answer: Option B
Explanation:
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| 28. |
________ of mental material produces convection currents beneath the surface of the earth. |
| A. |
Heat |
B. |
Density |
| C. |
Circular motion |
D. |
Horizontal movement |
Answer: Option C
Explanation:
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| 29. |
Earthquake waves _______ in velocity upon entering the mentle. |
| A. |
Change |
B. |
Increase |
| C. |
Decrease |
D. |
None of these |
Answer: Option B
Explanation:
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| 30. |
The ______ Layer circumscribes the entire planet but is exposed only in ocean basins. |
| A. |
Lithosphere |
B. |
Mesosphere |
| C. |
Sial |
D. |
Sina |
Answer: Option D
Explanation:
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