Geography · Environmental Studies

Oceanography and Hydrology

1,673 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 chemistry air and atmosphere natural cycles and resources constituents of air component of air - nitrogen

Which of following statements is true?

  1. The salinity of rivers increases with time

  2. The salinity of rivers decreases with time

  3. The salinity of seas increases with time

  4. The salinity of seas decreases with time
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A falling of rain on earth causes breaking up of rocks and transferring their minerals to the ocean, the ocean becomes saltier and by evaporation, water evaporates leaving salt in the oceans.


So, by this, we can say that salinity of increases with time.

Hence, the correct option is $\text{C}$

Multiple choice chemistry air and atmosphere natural cycles and resources constituents of air component of air - nitrogen

Almost all the water on the earth is contained in the:

  1. seas and oceans

  2. rivers, lakes, ice caps

  3. as ground water and in the atmosphere

  4. all of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Almost all the water on the earth is contained in the oceans, seas, rivers, lakes, ice caps, as ground water and in atmosphere as water vapour.

Option (D) is the correct answer.

Multiple choice physics the kinetic model of matter evaporation heat, internal energy and work phase change

Salt is extracted from sea-water by

  1. Treating with chemicals depositing salt at the bottom

  2. Filtering the water by nets blocking the salt.

  3. Boiling the water by coil leaving behind the salt.

  4. Evaporating the water by sun leaving behind the salt.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Salt is produced by direct evaporation of sea-water in sun. This process is cheapest and most efficient.

Multiple choice geography tides movements of ocean and sea water circulation of ocean water ocean water movement

The term "Bore" signifies _____________.

  1. To drill a well

  2. a wave caused by tides

  3. a wave cause by air

  4. To extract water from earth
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A tidal bore, often simply given as bore in context, is a tidal phenomenon in which the leading edge of the incoming tide forms a wave (or waves) of water that travels up a river or narrow bay against the direction of the river or bay's current.

Multiple choice geography tides movements of ocean and sea water circulation of ocean water ocean water movement

The difference between high tide and low tide is __________.

  1. Tidal range

  2. Tidal width

  3. Tidal height

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

  • Tides are the rise and fall of sea level caused by the combined effects of gravitational forces exerted by sun, moon and earth.
  • Tidal range is the vertical difference between high tide and its succeeding low tide.

Multiple choice geography tides movements of ocean and sea water circulation of ocean water ocean water movement

Ocean waves are used for generating ______.

  1. light

  2. power

  3. food

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

Ocean waves are used for generating power.
Wave Power:  Wave energy is produced when electricity generators are placed on the surface of the ocean. The energy provided is most often used in desalination plants, power plants and water pumps. Energy output is determined by wave height, wave speed, wavelength, and water density.

Multiple choice geography tides movements of ocean and sea water circulation of ocean water ocean water movement

The movement of the ocean water which is used for producing salt is _______.

  1. Waves

  2. Warm current's

  3. Cold currents

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

In cold countries, tides bring in saltwater and by their constant motion prevent harbours from becoming icebound. Low-lying areas along the sea-coast which get the seawater during high tides can be used to produce salt by trapping the water.