Oceanography - Geography Objective Questions and Answers | Geography gkseries mcqs | page3

(11) The Grand Canyon is located on the :
[A] Niger River
[B] Tapti River
[C] Rhine River
[D] Colorado River

Comment

Answer: Option [D]

The correct answer is Colorado River. Grand Canyon is in the northwest corner of Arizona, close to the borders of Utah and Nevada. The Colorado River, which flows through the canyon, drains water from seven states, but the feature we know as Grand Canyon is entirely in Arizona.

(12) The sea bed sloping gradually and bordering the continent is known as :
[A] Continental Platform
[B] Continental Slope
[C] Continental Shelf
[D] Coast

Comment

Answer: Option [C]

The sea bed sloping gradually and bordering the continent is known as Continental Shelf. 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.

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(13) Which of the following oceans has the shape of the English alphabet S ?
[A] Pacific Ocean
[B] Atlantic Ocean
[C] Indian Ocean
[D] Arctic Ocean

Comment

Answer: Option [B]

The correct answer is Atlantic Ocean. The Atlantic Ocean is the second-largest ocean in the world. It is "S" shaped and roughly bounded by the North and South Americas on the western side, and Europe and Africa on the eastern side.

(14) Which of the following is a landlocked sea ?
[A] Greenland Sea
[B] Timor Sea
[C] Aral Sea
[D] Arafura Sea

Comment

Answer: Option [C]

The correct answer is Aral Sea. The Aral Sea was an endorheic lake lying between Kazakhstan and Uzbekistan. The name roughly translates as "Sea of Islands", referring to over 1,100 islands that had dotted its waters.

(15) A place where there is constant intermingling of salt water and fresh water is ___
[A] Gulf
[B] Estuary
[C] Delta
[D] Bay

Comment

Answer: Option [B]

A place where there is constant intermingling of salt water and fresh water is Estuary. Estuaries form a transition zone between river environments and ocean environments and are subject to both marine influences, such as tides, waves, and the influx of saline water; and riverine influences, such as flows of fresh water and sediment. The inflow of both seawater and freshwater provide high levels of nutrients in both the water column and sediment, making estuaries among the most productive natural habitats in the world.

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