hydrosphere & oceanography section 3 MCQ Questions & Answers Detailed Explanation

Question : 1

Tsunamis are mainly produced by

a) Tides

b) Cyclones

c) Subaerial earthquakes

d) Submarine earthquakes

Question : 2

The highest salinity is found in

a) Lake Van in Turkey

b) Great Salt Lake in U.S.A.

c) Dead Sea

d) Red Sea

Question : 3

Consider the following statements :

1. The Labrador current is a cold current in the North Atlantic Ocean.
2. The Falkland current is a warm current that flows along the Chile coast of South Pacific Ocean.

a) Neither 1 nor 2

b) Both 1 and 2

c) Only 1

d) Only 2

Question : 4

Which of the following rivers crosses the Equator twice?

a) Amazon

b) Nil

c) Zaire

d) Niger

Question : 5

A ridge of 64000 km length and 2000 km to 2400 km width passing through North and South Atlantic oceanic basins enters into the South Pacific oceanic basin through Indian oceanic and then from the middle of Australia and Antarctic. This ridge is

a) Mid - Oceanic Ridge

b) Dolfin - Challenger Ridge

c) Socotra-Lakshadweep - Changos-Ridge

d) Pacific - Antractica Ridge

Question : 6

Consider the following statements.

1. Ocean currents are the slow surface movement of water in the ocean.
2. Ocean currents assist in maintaining the Earth’s heat balance.
3. Ocean currents are set in motion primarily by prevailing winds.
4. Ocean currents are affected by the configuration of the ocean.

a) 1, 2, 3 and 4

b) 1, 3 and 4

c) 1 and 2

d) 2, 3 and 4