Tag: oceans : temperature, salinity and density

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Questions Related to oceans : temperature, salinity and density

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

Neap tides, i.e., small tides are caused when _____________________.

  1. Sun, and moon are at right angles

  2. Sun, earth and moon are in one line

  3. There is new moon

  4. There is full moon
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Neap tides occur when the sun and moon are at right angles relative to the earth, causing their gravitational forces to partially cancel each other out, resulting in lower high tides.

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

The rise and fall of the sea-water at the surface at constant intervals is known as __________.

  1. Bore

  2. Tides

  3. Waves

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

Tides are the periodic rise and fall of sea levels caused by the gravitational forces exerted by the moon and the sun, and the rotation of the earth.

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

Spring tides are caused, when _____________________.

  1. The earth, moon and sun are in a line

  2. The moon and sun are on a line

  3. The sun and moon are at right angles to each other and the earth is at the centre

  4. There is new moon
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Spring tides occur when the earth, moon, and sun are aligned, causing their gravitational forces to combine and produce higher high tides and lower low tides.

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

Neap tides occur _______________.

  1. On new and full moon days

  2. On first and third quarters of the month

  3. Twice daily

  4. On every full moon
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Neap tides occur during the first and third quarters of the moon phase, when the sun and moon are at right angles to the earth.

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

The tides in the seas are influenced both by the sun and the moon. This fact is proved by ________________.

  1. The spring and the neap tides

  2. The bores

  3. Ebb tides

  4. Oceanic currents
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The variation between spring and neap tides is evidence that both the sun and the moon exert gravitational influence on the earth's oceans.

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

Tides are caused because of ___________________.

  1. Gravitational pull of the sun

  2. Gravitational pull of the moon

  3. Gravitational pull of the earth towards its axis

  4. Difference in the temperatures of water of the sea at different depths
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

While the sun also exerts a gravitational pull, the moon is the primary driver of tides due to its proximity to the earth.

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

The part of the earth which is covered by water is termed as _____________.

  1. Atmosphere

  2. Biosphere

  3. Hydrosphere

  4. Exosphere
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The hydrosphere encompasses all water found on, under, and over the surface of the earth, including oceans, lakes, and rivers.

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

The part of the sea which touches the land and is generally not so deep is called ______________.

  1. The high sea

  2. The continental shelf

  3. Isthmus

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

The continental shelf is the shallow, submerged extension of the continent that extends from the shoreline to the shelf break.

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 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.