Geography · Environmental Studies

Oceanography and Hydrology

1,743 Questions

Find relevant questions on oceanography and hydrology that address aquatic ecosystems and physical geography. The topics include coastal landforms, coral reefs, ocean salinity, and tidal patterns. These concepts frequently appear in civil services and state level administrative examinations.

Coral reef structuresCoastal landformsOcean salinity patternsGlacial retreat impactsMangrove ecosystems

Oceanography and Hydrology Questions

Multiple choice evs sources of water and water cycle groundwater and depletion of water table rain: where does it come from availability and forms of water the water cycle

In water cycle, the maximum vaporization takes place:

  1. from oceans

  2. from rivers

  3. from streams

  4. from plants
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

86% of global evaporation occurs from the ocean due to its large surface area which directly comes in contact with sun rays and gives maximum vaporisation.


Hence, option A is correct.

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 tsunami and floods

Which of the following statements is not correct about the ocean currents?

  1. Currents do not exert an influence on the climatic conditions of the coasts

  2. Winds play an important role in the circulation of the ocean currents

  3. Currents are produced by the differences in the density of the sea water at different depths

  4. Direction of ocean currents is influenced by the shape and position of coasts
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Ocean currents significantly influence the climate of coastal regions by transporting warm or cold water, which affects air temperature and humidity.

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

Which of the following is not an effect of the ocean currents?

  1. They effect commerce because they keep the harbours open even during winter

  2. Water of the ocean is kept pure

  3. Warm equatorial currents lower the temperature of the places through which they pass

  4. They do not effect rainfall over the coasts
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ocean currents have a profound effect on coastal rainfall; for example, warm currents often increase moisture and rainfall, while cold currents can lead to aridity.

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 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.