Match List I (Major ocean floor features) with List II (their distinguishing geomorphological characteristics).List I List II A. Continental Shelf 1. Long, narrow and deepest depressions of the sea floor, with relatively steep sides B. Continental Slope 2. Submerged extension of the continental landmass, rich in marine resources C. Abyssal Plain 3. Mid oceanic ridges, trenches, island arcs and sea mounts D. Ocean Trench 4. Steep transitional zone connecting the continental shelf with the deep ocean basin
A-2, B-4, C-3, D-1
The ocean floor descends from the continental margin to the deep basin in a regular sequence: continental shelf, continental slope, then the deep ocean floor (abyssal plains), interrupted by ridges, trenches and seamounts.
Step 1 — Continental Shelf: the gently sloping, submerged extension of the continent, shallow and rich in fisheries, oil and gas. A matches 2.
Step 2 — Continental Slope: the steep zone at the shelf's edge leading down to the deep ocean basin. B matches 4.
Step 3 — Ocean Trench: the long, narrow and deepest parts of the ocean floor with steep sides, such as the Mariana Trench. D matches 1.
Step 4 — The remaining description, mid-oceanic ridges, trenches, island arcs and seamounts, refers to the relief features found on the deep ocean floor of which the abyssal plain is part. C matches 3.
Every other combination places the shelf, slope or trench against a description that belongs to a different feature, such as calling the shelf a deep depression.
A-2, B-4, C-3, D-1 option is correct.
Similar Questions
Which of the following ocean relief features has pointed summits that rise from the seafloor but do not reach the ocean’s surface, often attaining heights of 3,000–4,500 metres?
Which process is most directly responsible for the generation of tsunamis following underwater earthquakes?
Important Questions from Oceanography
The Gulf Stream is found in
Consider the following statements :
1. In the tropical zone, the western sections of the oceans are warmer than the eastern sections owing to the influence of trade winds
2. In the temperate zone, westerlies make the eastern sections of oceans warmer than the western sections.
Which of the statements given above is/are correct?
Which of the following statement is not correct?
I. Generally, warm ocean currents originate near the equator and flow towards the poles.
II. Gulfstreams are cold water currents.
Which of the following ocean currents does not flow into the Pacific Ocean?
Which one of the following is a cold ocean current ?
