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

A place where water flows over a cliff.

  1. wetland

  2. strait

  3. river

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

A waterfall is a point in a river or stream where water flows over a vertical drop or a series of drops.

Multiple choice

When water flows back into the ocean it is called

  1. evaporation

  2. transpiration

  3. run-off

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

Run-off refers to the water from rain, snowmelt, or other sources that flows over the land surface and eventually reaches streams, rivers, and oceans.

Multiple choice

Most of the Earth's water is found

  1. underground in aquifers

  2. in rivers and lakes

  3. in the oceans
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Approximately 97 percent of the Earth's water is contained in the oceans, making them the largest reservoir of water on the planet.

Multiple choice

When water is evaporated from the surface of the ocean

  1. biofuel is being used

  2. mechanical energy is being used

  3. solar energy is being used
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Evaporation is the process where liquid water turns into water vapor. This phase change requires heat energy, which is provided by the sun in the natural water cycle.

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.