hydrosphere & oceanography section 3 MCQ Questions & Answers Detailed Explanation

Answer: (d)

Water makes up 70.8% of the Earth’s surface, while the other 29% consists of continents and islands. To break the numbers down, 96.5% of all the Earth’s water is contained within the oceans as salt water, while the remaining 3.5% is freshwater lakes and frozen water locked up in glaciers and the polar ice caps.

Answer: (c)

The Falkand current is a cold current. It flows along the Argentina’s coast in South Atlantic Ocean.

Answer: (c)

The Agulhas Current is current of the southwestern Indian Ocean. It flows down the east coast of Africa from 27°S to 40°S.

Answer: (b)

The Jeans-Jeffreys tidal hypothesis, championed by James Jeans and Harold Jeffreys, explained the origin of the solar system as a result of a close encounter between the Sun and a second star.

However, it differed significantly from the other major catastrophic hypothesis of the 20th century, the Chamberlin-Moulton planetesimal hypothesis.

Answer: (d)

Answer: (c)

East Australian current is a warm ocean current that moves warm water from the tropical Coral Sea, where it splits from the South Equatorial Current, down the east coast of Australia.