Tag: movements of ocean and sea water

Questions Related to movements of ocean and sea water

Which is most abundant element in sea water?

geography ocean and man circulation of ocean water movements of ocean and sea water oceans : temperature, salinity and density study of water pollution threats to water resource pollution and environment

  1. Sodium

  2. Chlorine

  3. Iodine

  4. Potassium

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Correct Option: A
Explanation:

The most abundant dissolved ions in seawater are sodium, chloride, magnesium, sulfate and calcium. Its osmolarity is about 1000 mOsm/l.

In which of the following, the direction of Ocean currents are reversed with season?

geography ocean currents movements of ocean water movements of ocean and sea water oceanic circulations

  1. In Pacific Ocean

  2. In Atlantic Ocean

  3. In Indian Ocean

  4. None of these

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Correct Option: C
Explanation:

The current systems of the Indian Ocean are largely controlled and modified by landmasses and monsoon winds. The currents in the northern Indian Ocean change their flow direction twice a year due to north-east and south-west monsoon winds.

The scandinavian countries are located in high latitudes. Parts of countries located in the same latitudes freeze during winter, but the ports located on the Norwegian coast do not freeze. 
This is the mainly due to the fact that __________________.

geography ocean currents movements of ocean water movements of ocean and sea water oceanic circulations

  1. Many small rivers drain to the sea

  2. There is a chain of volcanoes

  3. The North Atlantic Drift flows past the coast

  4. The Westerlies blow from the South West

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Correct Option: C
Explanation:
The scandinavian countries are located in high latitudes. Parts of countries located in the same latitudes freeze during winter, but the ports located on the Norwegian coast do not freeze. 
This is the mainly due to the fact that the North Atlantic Drift flows past the coast.

The relatively warm waters of the North Atlantic Drift are responsible for moderating the climate of western Europe, so that winters are less cold than would otherwise be expected at its latitude. Water in the north Atlantic sinks because it is dense.

The ocean water current which flow slowly is called ______.

geography ocean currents movements of ocean water movements of ocean and sea water oceanic circulations

  1. warm current

  2. cold current

  3. stream

  4. drift

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Correct Option: D
Explanation:

The ocean water current which flow slowly is called Drift. They are affected by atmospheric circulation and the wind belts. When the wind blows over the sea's surface in one direction for a period of time, the stress force produced by friction between the air and the sea water cause the sea water to flow.

Which is the deepest oceanic trench? 

geography ocean currents movements of ocean water movements of ocean and sea water oceanic circulations

  1. Java

  2. Puertorico

  3. Mariana

  4. None of these

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Correct Option: C
Explanation:

The Challenger Deep in the Mariana Trench is the deepest known point in Earth's oceans. It is located in the western Pacific Ocean, to the east of the Mariana Islands. The trench is about 2,550 kilometres (1,580 mi) long with an average width of 69 kilometres (43 mi).

The ocean water current which flow speedily is called ______.

geography ocean currents movements of ocean water movements of ocean and sea water oceanic circulations

  1. warm current

  2. cold current

  3. stream

  4. drift

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Correct Option: C
Explanation:

The ocean water current which flow speedily is called Stream. The Gulf Stream is typically 100 kilometers wide and 800 meters to 1,200 meters deep. The current velocity is fastest near the surface with the maximum speed typically about 2.5 meters per second.

The oceanic currents flowing towards the Equator are ______.

geography ocean currents movements of ocean water movements of ocean and sea water oceanic circulations

  1. warm currents

  2. cold currents

  3. streams

  4. drifts

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Correct Option: B
Explanation:

Ocean currents act much like a conveyer belt, transporting warm water and precipitation from the equator toward the poles and cold water from the poles back to the tropics. Thus, currents regulate global climate, helping to counteract the uneven distribution of solar radiation reaching Earth’s surface. Without currents, regional temperatures would be more extreme—super hot at the equator and frigid toward the poles—and much less of Earth’s land would be habitable.

Which one of the following is a warm current?

geography ocean currents movements of ocean water movements of ocean and sea water oceanic circulations

  1. Falkland current

  2. Labrador current

  3. Benguela current

  4. Gulf stream

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Correct Option: D

Which one of the following is a cold current?

geography ocean currents movements of ocean water movements of ocean and sea water oceanic circulations

  1. Brazilian current

  2. Gulf stream

  3. Labrador current

  4. Kuroshio current

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Correct Option: C

In which year the tsunami waves devastated the east coast of India?

geography ocean currents movements of ocean water movements of ocean and sea water oceanic circulations

  1. 2002

  2. 2004

  3. 2005

  4. 2006

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Correct Option: B
Explanation:

Indian Ocean Tsunami of 2004, hit the coast of several countries of South and Southeast Asia in December 2004. An earthquake undersea of magnitude 9.1 struck off the coast of the Indonesian Island of Sumatra. Tens of thousands were reported dead and missing in Sri Lanka and India. The tsunami and its aftereffect were responsible for great devastation and loss at the end of the Indian Ocean.