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 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.

Multiple choice chemistry adsorption and colloids applications of colloids colloids around us the colloidal state

Delta formation at the mouth of river takes place by:

  1. coagulation of negative salt ions and positive river particles

  2. coagulation of positive salt ions and negative river particles

  3. coagulation of positive salt ions and positive river particles

  4. coagulation of negative salt ions and negative river particles
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

River water contains charged colloidal particles of clay, sand and many other materials. Sea water is very big store house of a variety of electrolytes dissolved in it. As soon as river water comes in contact with sea water coagulate the suspended colloidal particles which ultimately settle down at the point of contact. Thus the level of the river bed rises. As a result, water adopts a different course and delta is formed in due course of time.

Multiple choice fluid dynamics option b: engineering physics physics

After the storm, the sea water waves subside due to:

  1. Surface tension of sea-water

  2. Disapperance of heavy currents

  3. The viscosity of sea water

  4. Gravitational pull of the storm
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

After the storm, the sea water waves subside due to the viscosity of sea water. Since viscosity's main cause is cohesive force which acts in intermolecular particles. So, sea water waves subside due to these cohesive force between water molecules.

Multiple choice evs hygiene - a key to healthy life mosquito and human health mosquitoes and malaria diseases caused by mosquitoes contaminated water spreads disease

Mosquito breeding occurs in 

  1. Stagnant water.

  2. Sea.

  3. River.

  4. All of the above.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Mosquitoes breed in stagnant, standing fresh water oftentimes found around the home. In tin cans, buckets discarded tires and other artificial containers that hold stagnant water. In untended pools, birdbaths, clogged rain gutters, and plastic wading pools that hold stagnant water.

So, the correct answer is 'Stagnant water.'.
Multiple choice evs sun and planets phases of moon moon and it's phases moon

Miriam notices when she goes to the beach that sometimes the water rises as high as the pier. At other times of the day, the water barely covers the pillars under the pier. These differences in water level are primarily due to the gravitational influence of which of the following?

  1. The Sun

  2. The Moon

  3. Asteroids

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

The different levels of the water of a sea are known as tides. Higher level is known as high tide and lower as low.

Tides are due to the gravitational forces of the Moon and the Sun. The tide is high when the moon or the sun or both are on the side of the sea and vice versa.
The effect of tides due to the moon is much greater than that of the sun, because the moon is much closer to the earth.
The differences in water level are primarily due to the gravitational influence of the moon and secondarily due to that of the sun.