Oceanography MCQ
1. The continents float in the upper mantle due to a form of buoyancy known as __________.
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2. The density of earth materials _______ as the core is approached.
Answer
Correct Answer:
Increases
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3. The exploration of the mid-cayman rise is intended to discover _______.
Answer
Correct Answer:
What life may have been like before the evolution of photosynthesis
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4. The deepest segments of the ocean floor are found ________.
Answer
Correct Answer:
In trenches associated with subduction zones
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5. Oozes are uncommon on continental margins because __________.
Answer
Correct Answer:
The biogenous component tends to be overwhelmed by the amount of lithogenous material derived from the nearby continent
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6. Piloted and unpiloted submersible vehicles of the 21st century include all except for __________.
Answer
Correct Answer:
The Super Deep Star 6 (SDS-6), a manned deep ocean bottom
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7. Sediment samples from deep beneath the ocean floor are recovered by __________.
Answer
Correct Answer:
Rotary drilling
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8. Waves usually arrive nearly parallel to the shore because ____________________________.
Answer
Correct Answer:
Waves are refracted toward shallow water
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9. Upwelling areas are more productive than oceanic areas because _______ in upwellings.
Answer
Correct Answer:
Organic matter is more concentrated, food chains are shorter, there are more nutrients
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10. To find the largest area of the ocean with the oldest ocean crust, you should go to the ________.
Answer
Correct Answer:
Western pacific
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11. The gravitational force exerted on earth by the moon is greatest at the _________________.
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12. Summer productivity in temperate waters typically is hampered by _________.
Answer
Correct Answer:
A strong thermocline
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13. China is home to _____ cows, pigs, and chickens.
Answer
Correct Answer:
9 billion
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14. Calcareous ooze is an example of _____.
Answer
Correct Answer:
Biogenous sediment
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15. Temperatures in the deep oceans are ________ at low latitudes compared to high latitudes.
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16. Numerous small, shallow earthquakes tend to occur at __________.
Answer
Correct Answer:
Divergent plate boundaries.
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17. The most important factor that causes ocean tides on earth is the __________.
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18. Since the earth turns _______ the tide wave tends to move _______ around earth.
Answer
Correct Answer:
Eastward; westward
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19. When geostrophic flow is achieved, the ______ force is balanced by the _______ force.
Answer
Correct Answer:
Coriolis, gravitational
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20. The refraction of waves tends to concentrate wave energy ______ and disperse energy _____.
Answer
Correct Answer:
On headlands; in bays
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21. The particle size of terrigenous sediments generally ________ with distance from shore.
Answer
Correct Answer:
Decreases.
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22. The color of light most readily absorbed by water is _________.
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23. The thickness of sea ice is limited primarily by __________.
Answer
Correct Answer:
The insulating nature of the ice itself
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24. Lithogenous sediments include all of the following except __________.
Answer
Correct Answer:
Calcareous and siliceous oozes
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25. ________ is the proportion of dissolved salts to pure water.
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26. Features of a depositional coast may include spits, barrier islands, tombolos, and __________.
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27. "whitecaps" form when _____________________.
Answer
Correct Answer:
Wave steepness reaches a ratio of 1:7
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Ocean Engineering MCQs | Topic-wise
