Tag: movements of ocean and sea water

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Questions Related to movements of ocean and sea water

Multiple choice geography ocean and man movements of ocean and sea water oceanic circulations circulation of ocean water oceans : temperature, salinity and density tsunami and floods

Which of the following is a type of wave ____________.

  1. Ripples

  2. Seas

  3. Swells

  4. All are the types of waves
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ripples are the instant effect of wind on water and they die down as quickly as they form, as the surface tension of the water dampens their efforts.

Waves always travel in the same direction as the wind is blowing: if the wind changes then the waves change with it. Wave size is determined by the strength of the wind, the length of time it has been blowing and the distance it has blown over or the ‘fetch’.

When strong winds blow for longer than a few hours, it gives the water sufficient energy that it then takes on a character of its own. This character and movement is known as swell, and it will march across open areas of water independent of the wind.

Multiple choice geography ocean and man movements of ocean and sea water oceanic circulations circulation of ocean water tsunami and floods

Large movements of ocean water from places of warm temperature to low temperature or vice versa are ______________.

  1. Drifts

  2. Ocean currents

  3. Waves

  4. Tides
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ocean currents are large-scale, continuous movements of seawater driven by wind, the Coriolis effect, and differences in water density.

Multiple choice geography ocean and man movements of ocean and sea water oceanic circulations circulation of ocean water tsunami and floods

Kuroshio current is available in ___________.

  1. North Pacific Ocean

  2. North Atlantic Ocean

  3. North Indian Ocean

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The north equatorial current turns northward to the obstruction of Philippines and thus gives birth to the Kuroshio current which flows from Taiwan to Ryuku ridge at 30 degrees N latitude. The Kuroshio current is a warm current. The average temperature and salinity are 8 degrees and 35% respectively.

Multiple choice geography ocean and man movements of ocean and sea water oceanic circulations circulation of ocean water tsunami and floods

Which factors influence ocean currents?

  1. Earth's rotation

  2. Winds across ocean

  3. Density of water

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Factors Influencing Nature and Movement of Ocean Currents:

1. Factors related to the earth’s rotation: Gravitational force and force of deflection.

2. Factors originating within the sea: Atmospheric pressure, winds, precipitation, evaporation and insolation.

3. Factors originating within the sea: Pressure gradient, temperature difference, salinity, density and melting of ice.

4. Factors modifying the ocean currents: Direction and shape of the coast, seasonal variations and bottom topography.

Multiple choice movements of ocean and sea water oceans : temperature, salinity and density geography tides and ocean currents circulation of ocean water oceanic circulations study of water pollution threats to water resource pollution and environment

The water of which of the following seas is most saline?

  1. Black Sea

  2. Dead Sea

  3. Baltic Sea

  4. Red Sea
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

With 33.7% salinity, the Dead Sea is one of the world's saltiest bodies of water. The Dead Sea is landlocked and in the lowest valley on earth. All the minerals of the surrounding countryside get washed into one pool, which in turn gets baked by the sun. This concentrates the salts so much that the Dead Sea is 10 times as salty as the ocean.

Multiple choice movements of ocean and sea water oceans : temperature, salinity and density geography tides and ocean currents circulation of ocean water oceanic circulations study of water pollution threats to water resource pollution and environment

The chief source of freshwater is ______________.

  1. Well water

  2. River water

  3. Sea water

  4. Rain water
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Rivers are the primary source of freshwater for human use and ecosystems, as they collect runoff from precipitation.

Multiple choice movements of ocean and sea water oceans : temperature, salinity and density geography tides and ocean currents circulation of ocean water oceanic circulations study of water pollution threats to water resource pollution and environment

The deep sea sediments are deposited mostly by __________________.

  1. microscopic organisms

  2. rivers

  3. ocean currents

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Deep sea sediments are largely composed of the remains of microscopic organisms (like foraminifera and diatoms) that settle on the ocean floor.

Multiple choice movements of ocean and sea water geography ocean circulation of ocean water oceans : temperature, salinity and density tsunami and floods oceanic circulations

Sea-waves are undulated movements of water on the surface of the sea due to ________________.

  1. rotation of earth

  2. difference in temperature

  3. friction of wind on the surface

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Wind blowing over the surface of the ocean creates friction, which transfers energy to the water and generates waves.

Multiple choice geography tides and ocean currents circulation of ocean water movements of ocean and sea water oceans : temperature, salinity and density oceanic circulations study of water pollution threats to water resource pollution and environment

How much area of the Earth surface is covered by Hydrosphere?

  1. 71%

  2. 75%

  3. 66%

  4. 70%
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Approximately 71% of the Earth's surface is covered by water, which constitutes the hydrosphere.