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 geography ocean currents movements of ocean water movements of ocean and sea water oceanic circulations

The ocean water current which flow slowly is called ______.

  1. warm current

  2. cold current

  3. stream

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

The ocean water current which flow slowly is called Drift. They are affected by atmospheric circulation and the wind belts. When the wind blows over the sea's surface in one direction for a period of time, the stress force produced by friction between the air and the sea water cause the sea water to flow.

Multiple choice geography ocean currents movements of ocean water movements of ocean and sea water oceanic circulations

The ocean water current which flow speedily is called ______.

  1. warm current

  2. cold current

  3. stream

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

The ocean water current which flow speedily is called Stream. The Gulf Stream is typically 100 kilometers wide and 800 meters to 1,200 meters deep. The current velocity is fastest near the surface with the maximum speed typically about 2.5 meters per second.

Multiple choice geography ocean currents movements of ocean water movements of ocean and sea water oceanic circulations

Arrange the wave generation forces in order of decreasing wave period:
1. Tsunami
2. Wind waves
3. Tides.

  1. 1, 2, 3

  2. 3, 2, 1

  3. 3, 1, 2

  4. 1, 3, 2
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Wave periods: Tides have the longest period (12-24 hours), followed by Tsunamis (minutes to hours), and Wind waves (seconds). Decreasing order: Tides, Tsunami, Wind waves (3, 1, 2).

Multiple choice geography ocean currents movements of ocean water movements of ocean and sea water oceanic circulations

Tsunamis generally take birth in ____________.

  1. The ocean deep

  2. The deep sea plain

  3. The continental shelf

  4. The continental slope
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The tsunami height on the continental shelf is lower for steeper slope in comparison to flatter slope. This shows that, as the continental slope becomes flatter, more energy is transmitted to the shelf and higher tsunami height is observed.

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

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

  1. Currents are rivers in the sea

  2. The water moves forward and the currents are felt at the depth as well

  3. They are caused by the unequal temperature of equatorial and polar regions

  4. Generally there is scanty rainfall over the coastal areas where the warm currents flow
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Warm currents generally increase humidity and rainfall in coastal areas, not decrease it. Cold currents are typically associated with dry conditions.

Multiple choice geography pressure belts and winds weather maps winds disaster risk reduction

Why don't the rivers falling into the Arabian Sea form deltas?

  1. The sea-coast is hard and rocky soil

  2. These rivers have a short swift course and flow down steep slopes

  3. They do not have enough of water

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

Rivers flowing into the Arabian Sea, such as the Narmada and Tapti, originate in mountainous regions and flow through narrow, steep paths. This high velocity prevents the deposition of sediments required to form deltas.

Multiple choice physics sources of energy wave energy tidal energy wave power and tidal power

Rise of ocean level is called ________ and fall of ocean level is called ________

  1. high wave, low wave

  2. low wave, high wave

  3. high tide, low tide

  4. low tide, high tide
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Tide  are the rise and fall of sea levels caused by the combined effects of gravitational forces exerted by the Moon, Sun and rotation of the Earth. The effect of moon is most prominent among all the factors. Rise of ocean level is called high tide and fall of ocean level is called low tide.

Multiple choice physics sources of energy wave energy tidal energy wave power and tidal power

What are built near seashores to collect water which comes during high tide?

  1. Dams or reservoirs

  2. Solar panel

  3. Wind mill

  4. Water well
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Dams or reservoirs are usually build near the narrow opening of the seashores to harness the energy of the waves during high tide in generation of electricity.

Multiple choice physics sources of energy wave energy tidal energy wave power and tidal power

The oceans cover almost ...... percent of the surface of earth with water and act as a vast collector of ...... energy.

  1. $71$, chemical
  2. $97$, solar
  3. $71$, solar
  4. $17$, hydroenergy
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Oceans cover approximately 71 percent of the Earth's surface and act as a vast collector of solar energy, which is stored as heat in the surface waters.

Multiple choice biology human influences on the environment human intervention in ecosystems humans in the environment involvement of humans in the conservation of environment

Global warming could cause a rise in the sea level because

  1. Oceans expand as they get warmer

  2. Glaciers and ice-sheets melt

  3. Both of the above

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

Melting of mass ice, glaciers around the world have caused increase in the sea level. The global warming is the main reason for the melting of ice, which are also a big reservoir of fresh water.

Multiple choice physics structure of earth electricity from water energy hydro electricity hydro energy

The tidal power plants are constructed near the mouth of ................ bays.

  1. $renewable$
  2. $huge$
  3. $narrow$
  4. $broad$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Tidal energy of sea waves is harnessed by constructing hydro electric dams at the mouth of narrow bays along the sea coast.
Hence, The tidal power plants are constructed near the mouth of narrow bays.

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

When water circulates through the water cycle it can be found in all the _________ form, at any given time somewhere on the earth.

  1. four

  2. two

  3. three

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

When water circulates through the water cycle it can be found in all the three forms, i.e., solid, liquid and gas at any given time somewhere on the earth. This continuous cycling of water in its three forms in nature keeps the total amount of water on earth constant even when the whole world is using it.