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
Which of the following is NOT a type of riverine landform?
-
Floodplain
-
Meander
-
Oxbow lake
-
Sand dune
D
Correct answer
Explanation
Sand dune is not a type of riverine landform, as it is a landform associated with wind-blown sediment. Floodplains, meanders, and oxbow lakes are all types of riverine landforms.
The process by which a river abandons its current channel and creates a new one is known as:
-
Avulsion
-
Channel migration
-
Meandering
-
Braiding
A
Correct answer
Explanation
Avulsion is the process by which a river abandons its current channel and creates a new one. Channel migration is the process by which a river channel migrates laterally over time, meandering is a type of river channel pattern characterized by sinuous bends, and braiding is a type of river channel pattern characterized by multiple channels separated by sediment bars.
Which of the following is NOT a factor that influences river channel evolution?
-
Water discharge
-
Sediment supply
-
Channel slope
-
Climate
D
Correct answer
Explanation
Climate is not a direct factor that influences river channel evolution, as it primarily affects the hydrology and sediment supply of a river. Water discharge, sediment supply, and channel slope are all direct factors that influence river channel evolution.
Which of the following is NOT a type of sediment deposit found in a river channel?
-
Point bar
-
Riffle
-
Pool
-
Sand dune
D
Correct answer
Explanation
Sand dune is not a type of sediment deposit found in a river channel, as it is a landform associated with wind-blown sediment. Point bar, riffle, and pool are all types of sediment deposits found in a river channel.
The process by which sediment is deposited on the riverbed or banks is known as:
-
Deposition
-
Erosion
-
Sediment transport
-
Channel migration
A
Correct answer
Explanation
Deposition is the process by which sediment is deposited on the riverbed or banks. Erosion is the process by which sediment is detached from the riverbed or banks, sediment transport is the process by which sediment is moved downstream in a river, and channel migration is the process by which the river channel moves laterally over time.
The term 'braided river' refers to:
-
A river with a single, meandering channel
-
A river with multiple channels separated by sediment bars
-
A river with a straight channel
-
A river with a wide floodplain
B
Correct answer
Explanation
Braided river refers to a river with multiple channels separated by sediment bars.
Which of the following is NOT a type of riverine landform created by erosion?
-
Canyon
-
Gorge
-
Valley
-
Sand dune
D
Correct answer
Explanation
Sand dune is not a type of riverine landform created by erosion, as it is a landform associated with wind-blown sediment. Canyon, gorge, and valley are all types of riverine landforms created by erosion.
What is the primary cause of soil erosion?
-
Wind
-
Water
-
Gravity
-
All of the above
D
Correct answer
Explanation
Soil erosion can be caused by wind, water, gravity, or a combination of these factors.
What is the process by which sediment is deposited on a floodplain during flooding called?
-
Aggradation
-
Degradation
-
Erosion
-
Transportation
A
Correct answer
Explanation
Aggradation is the process by which sediment is deposited on a floodplain during flooding. This process helps to build up the elevation of the floodplain over time.
What is the term used to describe the highest level of water reached during a flood?
-
Flood stage
-
Crest
-
Base flow
-
Discharge
B
Correct answer
Explanation
The crest of a flood is the highest level of water reached during a flood event.
What is the term used to describe the process by which a river channel widens and deepens over time?
-
Erosion
-
Transportation
-
Deposition
-
Lateral migration
D
Correct answer
Explanation
Lateral migration is the process by which a river channel widens and deepens over time as the river meanders and erodes its banks.
What is the term used to describe the process by which water infiltrates the ground and becomes groundwater?
-
Infiltration
-
Percolation
-
Evaporation
-
Transpiration
A
Correct answer
Explanation
Infiltration is the process by which water infiltrates the ground and becomes groundwater.
What is the term used to describe the process by which water is released from the ground and becomes surface water?
-
Infiltration
-
Percolation
-
Evaporation
-
Transpiration
C
Correct answer
Explanation
Evaporation is the process by which water is released from the ground and becomes surface water.
Which natural process is responsible for the gradual wearing away of the Earth's surface?
-
Soil Erosion
-
Weathering
-
Deposition
-
Sedimentation
A
Correct answer
Explanation
Soil erosion is the natural process by which soil is worn away and transported from one place to another.
What is the primary agent of soil erosion by water?
B
Correct answer
Explanation
Rain is the primary agent of soil erosion by water because it can detach soil particles and transport them away.