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Subjects

Geography

Mass movements, erosion, and deposition

In Class 11 Geography, this topic within “Geomorphic Processes” explains how weathering, gravity, running water, wind, glaciers, waves, and underground water reshape the land. Students learn to distinguish mass movements such as landslides and soil creep from erosion, examine how sediments are transported, and understand deposition that builds features such as fans, floodplains, dunes, moraines, and deltas. It connects processes, landforms, and environmental impacts through clear geographical examples.

Expert · Level 3 · 25 questions

TOPIC PRACTICE

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25 questions

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  1. Driving forces exceed resisting forces
  2. The slope is completely stable
  3. Deposition will always increase
  4. The river base level has risen
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  1. Because rock colour changes
  2. Because effective friction and shear resistance decrease
  3. Because the river source closes
  4. Because wind erosion ends
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  1. When beds dip opposite to the slope
  2. When beds are perfectly horizontal and impermeable
  3. When beds dip in the direction of slope
  4. When there are no joints on the slope
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  1. Straight slip plane
  2. Movement only by wind
  3. Pure chemical solution
  4. Concave curved slip surface
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  1. Water content and fineness of material
  2. Depth of sea
  3. Thickness of glacier
  4. Duration of tide
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  1. Glacial abrasion
  2. Rapid debris flow of volcanic ash and water
  3. Marine deposition
  4. Desert deflation
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  1. Delta front
  2. Beach ridge
  3. Main scarp
  4. Alluvial fan
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  1. Because rainfall permanently stops
  2. Because river deposits instantly become rock
  3. Because sea waves reach mountains
  4. Because shaking reduces the slope's resisting strength
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  1. It removes basal support and destabilizes the slope
  2. It makes the slope as strong as iron
  3. It makes particle weight zero
  4. It stops cloud formation
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  1. When waves cut the base and leave the upper part unsupported
  2. When there are no cracks on the coast
  3. When the sea remains completely calm
  4. When only wind deposition occurs
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  1. Only tidal velocity
  2. Bonding between particles and root binding
  3. Evaporation of sea salts
  4. Shape of river meander
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  1. Because friction always disappears
  2. Because water always freezes
  3. Because the downslope component of gravity increases
  4. Because deposition energy does not increase
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  1. It always cements the soil
  2. It creates tides in a river
  3. It erodes deltas in the sea
  4. It slowly displaces particles downslope
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  1. Saturated upper soil over frozen subsoil
  2. Completely dry slope
  3. Only sea waves
  4. Deep ocean floor
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  1. It consists only of soluble material
  2. It can be extremely rapid and more destructive
  3. It always remains still on flat plains
  4. It deposits only marine sand
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  1. Only population density
  2. Only length of day
  3. Slope angle rock structure rainfall and land use
  4. Only colour of river water
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  1. Because it only changes latitude
  2. Because it makes all slopes equal
  3. Because it removes sea level
  4. Because it controls rainfall temperature variation and vegetation
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  1. Because a thin uniform soil layer is removed slowly
  2. Because it occurs only in the sea
  3. Because it always forms a deep valley
  4. Because it involves only glaciers
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  1. Levelling of fertile plain
  2. Badland or ravine topography
  3. Marine coral reef
  4. Glacial moraine
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  1. All particles will dissolve immediately
  2. Only vertical erosion will increase
  3. Sediment deposition will increase
  4. The source of the river will close
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  1. It can extend the valley toward the source
  2. It turns the sea into mountains
  3. It changes all sediments into vapour
  4. It makes wind direction permanent
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  1. It may capture the upper drainage of a weaker stream
  2. It turns all rivers into lakes
  3. It stops sea tides
  4. It turns a glacier into vapour
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  1. Because renewed downcutting leaves old floodplains at higher levels
  2. Because the river stops flowing
  3. Because sea waves enter the valley
  4. Because a glacier forms a delta
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  1. They are in dynamic balance
  2. Only deposition occurs
  3. Only marine erosion occurs
  4. The river carries no load
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  1. Intense glacial erosion
  2. Sediment deposition after loss of energy
  3. Chemical decay of rock
  4. Volcanic eruption

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