hydrosphere & oceanography section 6 MCQ Questions & Answers Detailed Explanation

Answer: (a)

Bering sea is the largest in area. The Bering Sea is a marginal sea of the Pacific Ocean. It comprises a deep water basin, which then rises through a narrow slope into the shallower water above the continental shelves.

Answer: (d)

Humboldt Current is a cold-water current of the southeast Pacific Ocean that flows northwards along the west coast of Chile and Peru.

Answer: (d)

The continental shelf is the extended perimeter of each continent and associated coastal plain. Much of the shelf was exposed during glacial periods, but is now submerged under relatively shallow seas (known as shelf seas) and gulfs, and was almost similarly submerged during other interglacial periods.

The continental margin, between the continental shelf and the abyssal plain, comprises a steep continental slope followed by the flatter continental rise.

Sediment from the continent above cascades down the slope and accumulates as a pile of sediment at the base of the slope called the continental rise.

Though the continental shelf is treated as a physiographic province of the ocean, it is not part of the deep ocean basin proper, but the flooded margins of the continent.

Answer: (c)

Answer: (c)

In absence of cold Labrador current there will be no North East Atlantic fishing ground.

Answer: (d)