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Test: Water (Oceans) - UPSC MCQ


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10 Questions MCQ Test Geography for UPSC CSE - Test: Water (Oceans)

Test: Water (Oceans) for UPSC 2024 is part of Geography for UPSC CSE preparation. The Test: Water (Oceans) questions and answers have been prepared according to the UPSC exam syllabus.The Test: Water (Oceans) MCQs are made for UPSC 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Water (Oceans) below.
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Test: Water (Oceans) - Question 1

A major portion of sea level is found at:

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Ocean floor has varied and complex features.

Test: Water (Oceans) - Question 2

Along the coasts, salinity is:

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Surface salinity is lowered in coastal regions because of the inflow of fresh water from rivers.

Test: Water (Oceans) - Question 3

Salinity refers to the total amount of

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Salinity is the saltiness or dissolved salt content of a body of water. It is a general term that is used to describe the levels of different salts, such as sodium chloride, magnesium and calcium sulfates and bicarbonates.

Test: Water (Oceans) - Question 4

The relief feature of oceanic floor shown in the given picture is

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Submarine canyons have been found carving deep cracks that extend from near shore to deep sea edge of the oceanic shelf.

Test: Water (Oceans) - Question 5

The salinity increases with depth and there is a distinct zone called

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Salinity, generally, increases with depth and there is a distinct zone called the halocline, where salinity increases sharply. Other factors being constant, increasing salinity of seawater causes its density to increase.

Test: Water (Oceans) - Question 6

A mid-ocean ridge is an underwater mountain system formed by

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A mid-ocean ridge is an underwater mountain system formed by plate tectonics and consequently is termed a divergent plate boundary.

Test: Water (Oceans) - Question 7

The factor affecting the distribution of temperature of ocean water is

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The factor affecting the distribution of temperature of ocean water is latitude, unequal distribution of land and water,prevailing winds ocean currents.

Test: Water (Oceans) - Question 8

The Coral reefs are a major characteristic of:

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The Pacific Ocean has the most coral reefs amongst all the oceans. There are about twice as many coral species in Pacific Ocean reefs as in Atlantic Ocean reefs.

Test: Water (Oceans) - Question 9

Which one of the following is the smallest ocean:

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Arctic Ocean is the smallest ocean in the world. It is located within the Arctic Circle and surrounds the North Pole. It is the shallowest and smallest of all the oceans in the planet, more than five times smaller than the Atlantic and Indian oceans. Its surface area is approximately 14.056 million square km, making it the smallest ocean on the planet.

Test: Water (Oceans) - Question 10

Which one of the following is not a minor relief feature in the oceans:

Detailed Solution for Test: Water (Oceans) - Question 10

The correct answer is C: Oceanic Deep. An oceanic deep, also known as a trench, is a steep-sided, narrow basin that is located at the base of continental slopes and along island arcs. It is associated with active volcanoes and strong earthquakes, making it a very significant feature in the study of plate movements. It is much deeper than the surrounding ocean floor, which is usually 3-5 km deep. Seamounts, Atolls, and Guyots, on the other hand, are all minor relief features of the ocean floor. Seamounts are mountains with pointed summits that rise from the seafloor but do not reach the surface of the ocean. Atolls are low islands consisting of coral reefs surrounding a central depression. Guyots are flat-topped seamounts that have been eroded by waves.

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