Oceanography (Oceans, Currents, Tides) NDA Questions

NDA Physical Geography

Oceanography (Oceans, Currents, Tides) MCQ Questions


7.
The Mariana Trench, located in the western Pacific Ocean, is significant as the:
A.
Deepest known point in the world's oceans
B.
Widest continental shelf in the world
C.
Shallowest point in any ocean
D.
Largest coral reef system in the world
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ANSWER :
A. Deepest known point in the world's oceans
8.
A continuous, elongated submarine mountain chain, formed largely due to volcanic and tectonic activity along divergent plate boundaries, running through the middle of major ocean basins, is known as a:
A.
Continental shelf
B.
Mid-oceanic ridge
C.
Guyot
D.
Abyssal plain
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ANSWER :
B. Mid-oceanic ridge
9.
An isolated, submerged volcanic mountain rising from the ocean floor, not reaching the surface, is known as a:
A.
Atoll
B.
Seamount
C.
Guyot
D.
Continental shelf
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ANSWER :
B. Seamount
10.
A flat-topped seamount, believed to have been formed by the erosion of a former volcanic island that subsequently subsided beneath the ocean surface, is known as a:
A.
Guyot (or tablemount)
B.
Continental rise
C.
Atoll
D.
Fjord
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ANSWER :
A. Guyot (or tablemount)
11.
Among the world's major oceans, the largest in terms of both area and average depth is the:
A.
Indian Ocean
B.
Pacific Ocean
C.
Arctic Ocean
D.
Atlantic Ocean
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ANSWER :
B. Pacific Ocean
12.
The second-largest ocean in the world, characterised by a distinctive 'S'-shaped configuration, is the:
A.
Pacific Ocean
B.
Indian Ocean
C.
Southern Ocean
D.
Atlantic Ocean
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ANSWER :
D. Atlantic Ocean