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
What is the term used to describe the process by which mangroves trap and accumulate sediments?
-
Accretion
-
Erosion
-
Deposition
-
Sedimentation
A
Correct answer
Explanation
Accretion is the process by which mangroves trap and accumulate sediments, leading to the formation and growth of mangrove habitats.
What is the term used to describe the process of converting sedimentary rocks into metamorphic rocks?
-
Weathering
-
Erosion
-
Metamorphism
-
Deposition
C
Correct answer
Explanation
Metamorphism is the process by which sedimentary rocks are subjected to high temperatures, pressures, or chemical alteration, resulting in the formation of new minerals and textures.
What is the term for a large, steep-sided valley with a river or stream flowing through it?
-
Canyon
-
Valley
-
Gorge
-
Ravine
A
Correct answer
Explanation
Canyons are deep, narrow valleys with steep sides, typically formed by the erosive action of rivers or streams over long periods of time.
Liquefaction is a phenomenon in which:
-
Soil loses its strength and behaves like a liquid
-
Soil becomes denser and more compacted
-
Soil erodes and is carried away by water
-
Soil cracks and forms fissures
-
Soil becomes impermeable to water
A
Correct answer
Explanation
Liquefaction occurs when saturated soil loses its strength and behaves like a liquid, typically due to the shaking caused by an earthquake.
Which of the following is a common method used to stabilize slopes in Mine Reclamation?
-
Terracing.
-
Retaining Walls.
-
Gabions.
-
All of the above.
D
Correct answer
Explanation
Terracing, Retaining Walls, and Gabions are all common methods used to stabilize slopes in Mine Reclamation, helping to prevent erosion and landslides.
What is the primary human activity that contributes to coastal erosion?
-
Agriculture
-
Mining
-
Construction
-
Tourism
C
Correct answer
Explanation
Construction activities, such as the building of seawalls and jetties, can alter the natural flow of sediment along the coast and lead to increased erosion.
What is the primary mechanism by which longshore drift contributes to coastal erosion?
-
By transporting sediment away from the coast
-
By creating sandbars and spits
-
By forming rip currents
-
By increasing wave height
A
Correct answer
Explanation
Longshore drift is the movement of sediment along the coast by waves and currents. It can contribute to coastal erosion by transporting sediment away from the coast, leaving it more vulnerable to wave action.
Which of the following is NOT a strategy for managing coastal erosion?
-
Beach nourishment
-
Seawalls
-
Dune restoration
-
Relocation of coastal communities
D
Correct answer
Explanation
Relocation of coastal communities is not typically considered a strategy for managing coastal erosion. Instead, efforts are typically focused on protecting existing communities and infrastructure from erosion.
How does beach nourishment help to mitigate coastal erosion?
-
By raising the elevation of the beach
-
By increasing the slope of the beach
-
By reducing wave energy
-
By creating sandbars
A
Correct answer
Explanation
Beach nourishment involves adding sand to the beach to raise its elevation and make it more resistant to erosion.
How does dune restoration help to protect coastal communities from erosion?
-
By absorbing wave energy
-
By trapping sand and building up the beach
-
By reducing longshore drift
-
By creating a new beach
B
Correct answer
Explanation
Dune restoration involves planting vegetation on dunes to help trap sand and build up the beach, making it more resistant to erosion.
What is the primary agent of erosion in arid regions?
A
Correct answer
Explanation
Wind is the primary agent of erosion in arid regions due to the lack of water and vegetation.
Which process involves the breakdown of rocks into smaller particles?
-
Weathering
-
Erosion
-
Deposition
-
Transportation
A
Correct answer
Explanation
Weathering is the process of breaking down rocks into smaller particles due to exposure to atmospheric conditions.
What is the term for the movement of sediment from one location to another?
-
Weathering
-
Erosion
-
Deposition
-
Transportation
D
Correct answer
Explanation
Transportation is the process of moving sediment from one location to another by wind, water, ice, or gravity.
What is the term for the accumulation of sediment in a particular location?
-
Weathering
-
Erosion
-
Deposition
-
Transportation
C
Correct answer
Explanation
Deposition is the process of accumulating sediment in a particular location after it has been transported by wind, water, ice, or gravity.
Which type of weathering involves the breakdown of rocks by the action of water?
-
Physical weathering
-
Chemical weathering
-
Biological weathering
-
Mechanical weathering
B
Correct answer
Explanation
Chemical weathering is the process of breaking down rocks by the action of water, which can dissolve minerals and cause rocks to disintegrate.