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

Marine habitats can be broadly divided into _____________.

  1. delta, coastal and deep sea

  2. coastal, continental and coral reefs

  3. wetlands, coastals and coral reefs

  4. coastal, deep sea and coral reefs
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Marine habitats are commonly categorized based on depth and proximity to land, with coastal, deep sea, and coral reefs being major divisions.

Multiple choice

Which of the following statements is/are false?

a. The oceans and the seas cover about 3/4 the surface of the earth. b. The sea water is salty and is unfit for drinking or agricultural activities. c. The process due to which water changes into its vapour from its exposed surface is called precipitation.

  1. Only a

  2. Only a and b

  3. Only b

  4. Only b and c

  5. Only c
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

This is the correct option as this statement is false. The process due to which water changes into its vapour from its exposed surface is called evaporation.

Multiple choice

The relief of the ocean floor is generally

  1. more uniform than that of the continents

  2. not of much significant

  3. more diverse than that of the continents

  4. with minor variations only
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

 Ocean bottoms are not plain as believed earlier; they reveal many complex and varied features which rival the relief features on land. The relief of the ocean floor is generally more diverse than that of the continents.

Multiple choice

What is an Archipelago?

  1. A long, narrow sea inlet that is bordered by steep cliffs.

  2. A hill or a ridge made of sand.

  3. A deep valley with very steep sides, often carved by a river.

  4. A group or chain of islands clustered together in a sea or ocean.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

An archipelago is a chain, cluster, or collection of islands, such as the Indonesian or Japanese archipelagos.

Multiple choice

Common salt can be obtained from seawater by?

  1. Filtration

  2. Evaporation

  3. Sublimation

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

Evaporation is the process used to recover dissolved solids from a liquid solution. Seawater is left in shallow pits where the sun evaporates the water, leaving salt behind.

Multiple choice

Which of the following could replace 'imaginary' as used in the passage?

Directions: Read the following passage carefully and select the most suitable option according to the corresponding number in the passage.

The Hydrosphere is an imaginary (1) sphere. However, its importance is not imaginary. The hydrosphere contains all the water that is above, below, or upon the surface of the earth. It also includes (2) the water inside plants and animals. The larger part of the earth's hydrosphere is salt water. The water cycle pureifys (3) the atmosphere and surface water by removing (4) pollutants. It (5) supplies usable water to living things on land. It does so by purifying the saltwater of the oceans and by turning (6) it into fresh water. All life thus depends upon an "active hydrosphere." That means an intact or undamaged hydrosphere with a running (7) water cycle. Since all living things use water inside their bodies, an active hydrosphere and life travel hand in hand (8).

  1. fantastic

  2. hypothetical

  3. real

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

'Imaginary' means something that is not real, a situation that is just thought of. Hypothetical also means the same. Therefore, it is the correct answer.