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 structure of ocean floor relief of the ocean ocean water movement ocean circulation

Which of the following statements are true regarding the importance of ocean?

  1. Ocean water are home to a great variety of marine life.

  2. Oceans are an enormous source of energy. Tides and waves can be harnessed to generate power.

  3. Oceans serves as means of transport.

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Oceans are vital for marine biodiversity, energy production (tidal/wave), and global trade, making all the listed points correct.

Multiple choice evs magic with mirrors dual nature of light nature and sources of light theories on light

While moving from deep water to shallow water.

  1. Frequency of the water waves decrease

  2. Frequency of the water waves increase

  3. Frequency of the water waves stays the same

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The frequency of a wave is determined by the source and remains constant when the wave passes from one medium to another, while speed and wavelength change.

Multiple choice geography rivers, coasts and glaciation landforms created by wind erosion wind and coast denudation river landform

Which is not an erosional feature of sea waves?

  1. Ox bow lake

  2. Beach

  3. Sea cave

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Runoff, streams, and rivers carry sediment to the oceans. The sediment in ocean water acts like sandpaper. Over time, they erode the shore. The bigger the waves are and the more sediment they carry the more erosion they cause and form from wave erosion.

Ox bow lake are formed by the erosional work of river.

Multiple choice geography rivers, coasts and glaciation landforms created by wind erosion wind and coast denudation river landform

Sea caves are formed due to the ___________ work of sea waves.

  1. erosional

  2. depositional

  3. both a and b

  4. none of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sea caves are coastal landforms created by the erosional power of waves striking against cliffs. The hydraulic action and abrasion of waves carve out cavities in the rock face.

Multiple choice geography rivers, coasts and glaciation landforms created by wind erosion wind and coast denudation river landform

The portion of the land projecting into the sea is called _________.

  1. beach

  2. sea cliff

  3. sand bar

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

A headland is an area of land that extends into a large body of water. It is often a cliff or other elevated landform overlooking a sea or ocean. It is formed when a softer rock in pushed or eroded inwards, the hard rocks sticks out in the sea. 

Multiple choice geography rivers, coasts and glaciation landforms created by wind erosion wind and coast denudation river landform

Sea cliff, sea caves, lagoons are the landforms created by the action of _______________.

  1. glacier

  2. wind

  3. sea waves

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

Sea forms create erosional and depositional landforms. Steep rocky coast rising almost vertically above sea water is called sea cliff which is very precipitous with overhanging crest. Sea canes are formed by the mechanical erosion of rocks by the action of sea. A lagoon is a shallow body of water separated from a larger body of water by barrier islands or reefs. They form in areas with small tidal range.

Multiple choice geography rivers, coasts and glaciation landforms created by wind erosion wind and coast denudation river landform

The brackish water lying in between the coast and the sand bars is called the ______________. 

  1. beach

  2. sea caves

  3. lagoons

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

Lagoons are shallow bodies of water separated from a larger body of water by barrier islands or reefs. In coastal geography, the water trapped between the coast and sand bars is referred to as a lagoon.

Multiple choice geography endogenetic movements endogenic process and creation of mountains major domains of the earth land and oceans study of continents - north america earth's movement and creation of landforms earthquake earthquakes

Water bodies that are smaller in size than ocean are called ________.

  1. Gulf

  2. Sea

  3. Bay

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

The words 'ocean' and 'sea' are often used to mean the same thing. However, a sea is a small area of an ocean, usually with land on several sides.

Multiple choice geography endogenetic movements endogenic process and creation of mountains major domains of the earth land and oceans study of continents - north america earth's movement and creation of landforms earthquake earthquakes

The seas which are completely surrounded by land, without any outlet into the ocean is called __________.

  1. marginal sea

  2. inland sea

  3. bay

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

Inland sea is a shallow sea that covers central areas of continents during periods of high sea level that result in marine transgression. The seas which are completely surrounded by land, without any outlet into the ocean is called inland sea.

Multiple choice geography endogenetic movements endogenic process and creation of mountains major domains of the earth land and oceans study of continents - north america earth's movement and creation of landforms earthquake earthquakes

The seas which are extensions of ocean and are partially surrounded by land are called ___________.

  1. bay

  2. marginal sea

  3. inland sea

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

Marginal seas are similar to open oceans with respect to being created by large scale geological processes, exhibiting biodiversity, and possessing layered water circulation patterns. The main difference between the two is related to depth and proximity to landmasses. The seas which are extensions of the ocean and are partially surrounded by land are known as marginal sea.

Multiple choice geography endogenetic movements endogenic process and creation of mountains major domains of the earth land and oceans study of continents - north america earth's movement and creation of landforms earthquake earthquakes

Curved indentation of a sea or a lake into the land, with a wide opening is called __________.

  1. Gulf

  2. Bay

  3. Strait

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

Bay is a water body that is surrounded or demarcated by land. It is a water body that is surrounded by land on three sides. Bays can be an inlet in a lake or a larger water body. 

Multiple choice geography endogenetic movements endogenic process and creation of mountains major domains of the earth land and oceans study of continents - north america earth's movement and creation of landforms earthquake earthquakes

Large inlet of a sea cutting deep into the land is called _________.

  1. Bay

  2. Gulf

  3. Lagoon

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

A gulf is a large inlet of a sea cutting deep into the landmass, typically narrower opening than a bay, though it is not observable in all geographical areas. Many important trading centers are located on gulfs. Gulfs are sometimes connected with oceans through narrow passages of water called as straits. 

Multiple choice geography endogenetic movements endogenic process and creation of mountains major domains of the earth land and oceans study of continents - north america earth's movement and creation of landforms earthquake earthquakes

What term is used for a shallow body of salt water separated from the sea by a low sand bank or coral reef?

  1. Lake

  2. Gulf

  3. Lagoon

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

Lagoons is a term used for a shallow body of saltwater separated from the sea by a low dan bank or coral reef. Lagoons are commonly divided into coastal lagoons and atoll lagoons. Lagoons are the most common coastal features around many parts of the world.

Multiple choice geography endogenetic movements endogenic process and creation of mountains major domains of the earth land and oceans study of continents - north america earth's movement and creation of landforms earthquake earthquakes

Narrow stretch of water that joins two large water bodies and separates two landmass is called ___________.

  1. Gulf

  2. Bay

  3. Strait

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

Strait is a narrow stretch of water that joins two large water bodies and separates two landmasses. Strait can be formed by a body of water overflowing land that has subsided or has been eroded.