Geography ยท Environmental Studies

Geomorphic Processes

2,120 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

What is the primary geomorphological impact of dam construction?

  1. Erosion

  2. Deposition

  3. Landslides

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

Dams trap sediment, leading to the deposition of sediment upstream of the dam and the erosion of sediment downstream.

Multiple choice

What is the term for the process by which sediment is deposited upstream of a dam?

  1. Aggradation

  2. Degradation

  3. Erosion

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

Aggradation is the process by which sediment is deposited upstream of a dam, raising the riverbed elevation.

Multiple choice

What is the term for the process by which sediment is eroded downstream of a dam?

  1. Aggradation

  2. Degradation

  3. Erosion

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

Degradation is the process by which sediment is eroded downstream of a dam, lowering the riverbed elevation.

Multiple choice

What is the term for the process by which a river channel adjusts to a change in sediment load?

  1. Aggradation

  2. Degradation

  3. Erosion

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

Channel adjustment is the process by which a river channel adjusts to a change in sediment load. This can involve changes in the channel width, depth, and slope.

Multiple choice

What are some of the geomorphological impacts of irrigation projects?

  1. Erosion

  2. Deposition

  3. Salinization

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

Irrigation projects can cause erosion, deposition, salinization, and waterlogging.

Multiple choice

How do irrigation projects cause erosion?

  1. By increasing the amount of water flowing through a river.

  2. By decreasing the amount of water flowing through a river.

  3. By changing the sediment load of a river.

  4. By changing the geomorphic diversity of a river.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Irrigation projects can cause erosion by changing the sediment load of a river. When water is diverted from a river for irrigation, the sediment load of the river is reduced. This can lead to erosion downstream of the diversion point.

Multiple choice

How do irrigation projects cause deposition?

  1. By increasing the amount of water flowing through a river.

  2. By decreasing the amount of water flowing through a river.

  3. By changing the sediment load of a river.

  4. By changing the geomorphic diversity of a river.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Irrigation projects can cause deposition by decreasing the amount of water flowing through a river. When water is diverted from a river for irrigation, the velocity of the water is reduced. This can lead to the deposition of sediment downstream of the diversion point.

Multiple choice

What is the process of overlaying multiple soil maps called?

  1. Soil merging

  2. Soil overlay

  3. Soil integration

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

Soil overlay involves combining multiple soil maps, often with different scales or themes, to create a comprehensive understanding of soil distribution and properties.

Multiple choice

What is the term used to describe the process by which a river erodes its bed and banks?

  1. Deposition

  2. Erosion

  3. Transportation

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

Erosion is the process by which a river wears away its bed and banks through the action of flowing water and sediment transport.

Multiple choice

What is the term used to describe the process by which a river deposits sediment?

  1. Erosion

  2. Transportation

  3. Deposition

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

Deposition is the process by which a river drops its sediment load, typically when the flow velocity decreases. This can occur at various locations along a river, such as the inner banks of meanders, downstream of rapids, or at river deltas.

Multiple choice

Which of these is NOT a factor influencing river morphology?

  1. Slope

  2. Sediment load

  3. Underlying geology

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

Climate directly influences river discharge and sediment supply, but it is not a direct factor in shaping river morphology. Slope, sediment load, and underlying geology are the primary factors that determine a river's morphology.

Multiple choice

What is the term used to describe the lateral movement of a river channel over time?

  1. Meandering

  2. Braiding

  3. Erosion

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

Meandering is the lateral movement of a river channel over time, resulting in a sinuous pattern. It is a common river pattern observed in many parts of the world.

Multiple choice

Which of these is NOT a type of riverine landform?

  1. Floodplain

  2. Delta

  3. Meander

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

Canyons are typically formed by fluvial processes, but they are not considered riverine landforms. Floodplains, deltas, and meanders are all landforms directly associated with rivers.

Multiple choice

What is the term used to describe the process by which a river transports sediment?

  1. Erosion

  2. Transportation

  3. Deposition

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

Transportation is the process by which a river carries sediment downstream. It occurs through various mechanisms, including bedload transport, suspended load transport, and dissolved load transport.

Multiple choice

What is the term used to describe the longitudinal profile of a river?

  1. Thalweg

  2. Meander

  3. Floodplain

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

Thalweg is the term used to describe the longitudinal profile of a river, representing the deepest part of the river channel.