Tag: circulation of ocean water

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Questions Related to circulation of ocean water

Multiple choice geography the properties of sea water properties of sea water oceanic salinity and oceanic temperature oceans : temperature, salinity and density circulation of ocean water

Which of the following affects the salinity of seawater?

  1. Uneven distribution of temperature

  2. Uneven supply of freshwater

  3. Both A and B

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

The uneven distribution of temperature on earth, uneven supply of freshwater, etc. affects the salinity of seawater. If temperature is high, evaporation will be high and it will result in high salinity. Again if evaporation is high but supply of fresh water exceeds evaporation than salinity will be low. So in many ways the salinity of sea water is effected.

Multiple choice geography the properties of sea water properties of sea water oceanic salinity and oceanic temperature oceans : temperature, salinity and density circulation of ocean water

What is salinity?

  1. Concentration of dissolved salt in water

  2. Temperature of water

  3. Concentration of minerals in water

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

Salinity is the amount of salt dissolved in a body of water. Salinity is an important factor in determining many aspects of the natural waters and of biological process within it, and is a thermodynamic state variable that, along with temperature and pressure, governs physical characteristics like the density and heat capacity of the water.

Multiple choice geography the properties of sea water properties of sea water oceanic salinity and oceanic temperature oceans : temperature, salinity and density circulation of ocean water

Which of the following controls the density of sea water?

  1. Temperature

  2. Salinity

  3. Both A and B

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

Temperature and salinity are the two properties of sea water that control the density of the sea water. If temperature reduces, density of water increases.

Multiple choice geography the properties of sea water properties of sea water oceanic salinity and oceanic temperature oceans : temperature, salinity and density circulation of ocean water

In which of the following area salinity is high?

  1. Tropical zone.

  2. Mid-latitudinal zone

  3. Polar areas

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

In tropical zone, temperature is generally higher than the other parts and so the rate of evaporation is also higher, therefore, salinity is higher.

Multiple choice geography the properties of sea water properties of sea water oceanic salinity and oceanic temperature oceans : temperature, salinity and density circulation of ocean water

In which of the following condition salinity is high?

  1. In seas where the rate of evaporation is high than the supply of freshwater.

  2. In seas where the rate of evaporation is low than the supply of freshwater.

  3. In seas where the supply of freshwater exceeds the rate of evaporation

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

In seas where the rate of evaporation is high than the supply of freshwater, salinity is high. It happens because due to evaporation water turns into water vapour and reduces in quantity, but the amount of salt remains the same.

Multiple choice geography the properties of sea water properties of sea water oceanic salinity and oceanic temperature oceans : temperature, salinity and density circulation of ocean water

In which of the following area salinity is very low?

  1. Polar area

  2. Tropical zones

  3. Mid-latitudinal zones

  4. Temperate regions
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In the polar areas, temperature is very low and hence evaporation is also very less in polar areas, so salinity is low.

Multiple choice geography the properties of sea water properties of sea water oceanic salinity and oceanic temperature oceans : temperature, salinity and density circulation of ocean water

Under which condition the salinity of seas is not effected?

  1. When the evaporation is high than the supply of freshwater.

  2. When the supply of freshwater exceeds the rate of evaporation

  3. When supply of freshwater and evaporation of water is low

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

Salinity is not affected much in seas where both the supply of freshwater and evaporation of water is low. Because in both the reasons salinity almost remains the same.

Multiple choice geography the properties of sea water properties of sea water oceanic salinity and oceanic temperature oceans : temperature, salinity and density circulation of ocean water

When an ocean current flows from the frigid zone to the torrid zone, it ______ the temperature of the coasts in the torrid zone.

  1. Reduces

  2. Increases

  3. Neither Increases nor decreases

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

Cold ocean currents moving from higher latitudes (frigid zones) toward the equator (torrid zones) bring cooler water, which lowers the air temperature of the coastal regions they pass.

Multiple choice geography the properties of sea water properties of sea water oceanic salinity and oceanic temperature oceans : temperature, salinity and density circulation of ocean water

State whether these sentences are true (T) or false (F).
The level of seawater remains the same everywhere.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

False,

 Seawater level varies depending on the varying gravitational signature. For example, a seamount (a large mountain within the sea) pulls a large volume of water towards itself, resulting in an elevated surface near the mount. Due to the varying geographical structure of the planet, the sealevel varies with latitude and longitude.

Multiple choice geography the properties of sea water properties of sea water oceanic salinity and oceanic temperature oceans : temperature, salinity and density circulation of ocean water

The heavier silicates named 'Sima' or silica + magnesium are most aboundant in the __________.

  1. Crust

  2. Core

  3. Mantle

  4. Ocean floors
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The heavier silicates named 'Sima' or silica + magnesium are most aboundant in the ocean floor.

These are a mix of minerals like gold, silver, copper, lead, zinc, and rare earth metals like molybdenum, tellurium, and titanium that form along the ocean floor—near underwater volcanic vents. Finally, there are cobalt-rich ferromanganese (Fe-Mn) crusts that form a layer of the ocean floor.