Geography ยท Environmental Studies

Geomorphic Processes

2,085 Questions

Geomorphic processes shape the Earth surface through physical mechanisms like weathering, erosion, and deposition. This topic covers soil formation, glacial movement, and coastal landform development. It forms a core component of physical geography in major competitive examinations.

Soil erosion controlGlacial movementCoastal landformsSedimentary rock formationWeathering processes

Geomorphic Processes Questions

Multiple choice

How are river terraces formed?

  1. By the deposition of sediment during floods

  2. By the erosion of the riverbed during low-flow periods

  3. By the lateral migration of the river channel

  4. By tectonic uplift of the river valley
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

River terraces are formed as a result of the lateral migration of the river channel. As the river meanders and changes course over time, it leaves behind abandoned floodplains that become elevated above the current river level.

Multiple choice

What is an abandoned channel?

  1. A former river channel that is no longer active

  2. A section of a river that has been straightened or channelized

  3. A narrow, deep channel that carries water during floods

  4. A wide, shallow channel that carries water during low-flow periods
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

An abandoned channel is a former river channel that is no longer actively carrying water. It may have been abandoned due to changes in the river's course, avulsion, or the formation of a new channel.

Multiple choice

How are abandoned channels formed?

  1. By the deposition of sediment during floods

  2. By the erosion of the riverbed during low-flow periods

  3. By the lateral migration of the river channel

  4. By tectonic uplift of the river valley
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Abandoned channels are formed as a result of the lateral migration of the river channel. As the river meanders and changes course over time, it may abandon certain channels, leaving them as isolated features in the floodplain.

Multiple choice

What is the significance of river terraces and abandoned channels?

  1. They provide evidence of past climate change and river behavior

  2. They can be used to reconstruct the history of a river's evolution

  3. They are important habitats for aquatic and terrestrial organisms

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

River terraces and abandoned channels are valuable geomorphic features that provide insights into past climate change, river behavior, and the evolution of river systems. They also serve as important habitats for various organisms.

Multiple choice

Which of the following is NOT a characteristic of a river terrace?

  1. It is a flat, elevated surface

  2. It is located along a river valley

  3. It is formed by the deposition of sediment during floods

  4. It is always associated with an abandoned channel
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

River terraces are not formed by the deposition of sediment during floods. They are formed by the lateral migration of the river channel, which leaves behind abandoned floodplains that become elevated above the current river level.

Multiple choice

What is the term used to describe the process by which a river abandons its channel and creates a new one?

  1. Avulsion

  2. Meandering

  3. Braiding

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

Avulsion is the process by which a river abandons its channel and creates a new one. This can occur suddenly or gradually, and it can result in the formation of abandoned channels.

Multiple choice

Which of the following factors can contribute to the formation of river terraces?

  1. Changes in climate

  2. Changes in sea level

  3. Tectonic uplift

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

Changes in climate, sea level, and tectonic uplift can all contribute to the formation of river terraces. Climate change can alter the discharge and sediment load of a river, leading to changes in its erosional and depositional patterns. Changes in sea level can cause rivers to adjust their base level, resulting in the formation of terraces. Tectonic uplift can also cause rivers to downcut and form terraces.

Multiple choice

River terraces can be used to infer information about:

  1. Past climate conditions

  2. River discharge and sediment load

  3. Tectonic activity

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

River terraces can provide valuable information about past climate conditions, river discharge and sediment load, and tectonic activity. By studying the elevation, morphology, and sediment composition of river terraces, geologists can reconstruct the history of a river's evolution and gain insights into past environmental changes.

Multiple choice

Abandoned channels can be found in:

  1. Floodplains

  2. Deltas

  3. Alluvial fans

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

Abandoned channels can be found in floodplains, deltas, alluvial fans, and other depositional environments associated with rivers. They are particularly common in areas where rivers have undergone significant changes in their course or where avulsion has occurred.

Multiple choice

The study of river terraces and abandoned channels falls under which branch of geomorphology?

  1. Fluvial geomorphology

  2. Coastal geomorphology

  3. Glacial geomorphology

  4. Tectonic geomorphology
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The study of river terraces and abandoned channels falls under fluvial geomorphology, which is the branch of geomorphology that focuses on the processes and landforms associated with rivers and streams.

Multiple choice

What is the term used to describe the process by which sediment is transported from the land to the sea?

  1. Erosion

  2. Deposition

  3. Weathering

  4. Mass wasting
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Erosion is the process by which sediment is transported from the land to the sea.

Multiple choice

Which of the following is not a type of coastal erosion?

  1. Wave erosion

  2. Wind erosion

  3. Glacial erosion

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

Glacial erosion is not a type of coastal erosion, as it is typically found in mountainous areas.

Multiple choice

What is the term used to describe the process by which sediment is deposited in the sea?

  1. Erosion

  2. Deposition

  3. Weathering

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

Deposition is the process by which sediment is deposited in the sea.

Multiple choice

What is the term for the process by which rocks and sediments are eroded and transported by glaciers?

  1. Glacial erosion

  2. Glacial deposition

  3. Glacial till

  4. Periglacial processes
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Glacial erosion is the process by which glaciers erode and transport rocks and sediments. Glacial deposition is the process by which glaciers deposit these materials. Glacial till is a type of sediment deposited by glaciers. Periglacial processes are processes that occur in areas adjacent to glaciers.

Multiple choice

What is the term for the process by which rocks and sediments are weathered and eroded by wind?

  1. Wind erosion

  2. Wind deposition

  3. Loess

  4. Desert pavement
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Wind erosion is the process by which rocks and sediments are weathered and eroded by wind. Wind deposition is the process by which wind deposits these materials. Loess is a type of sediment deposited by wind. Desert pavement is a layer of small stones and gravel that forms on the surface of deserts.