Geomorphology - General Awareness Multiple Choice Questions and Answers on Geography

Questions

86 Giant stairways are formed by

A River deposits

B River piracy

C Glacial deposits

D Glacial erosion

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Answer: Option [D]
Giant stairways are formed by Glacial erosion.

87 Two glaciers cutting head ward from opposite directions form a

A Col

B Cirque

C Esker

D Dolines

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Answer: Option [A]
Two glaciers cutting head ward from opposite directions form a Col.

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88 Kames are a feature of

A Coastal areas

B Desert areas

C Riverine areas

D Glaciated topography

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Answer: Option [D]
Kames are a feature of Glaciated topography. Glaciers are moving bodies of ice that can change entire landscapes. They sculpt mountains, carve valleys, and move vast quantities of rock and sediment.

89 Structural benches are formed due to

A Equal erosion

B Differential erosion on the banks

C Differential erosion along the valley bottom

D Both (A) and (B)

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Answer: Option [C]
Structural benches are formed due to differential erosion along the valley bottom. Structural benches or terraces formed due to differential erosion of alternate bands of hard and soft rock beds are called structural benches or terraces because of lithological control in the rate of erosion and consequent development of benches.

90 Pot-holes are a creation of

A Wind erosion

B Glacial erosion

C River erosion

D Abrasion on the floor of the river valley

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Answer: Option [C]
Pot-holes are a creation of River erosion. Potholes are circular depressions formed because of stream erosion aided by the abrasion of rock fragments. Once a small and shallow depression forms, pebbles and boulders get collected in those depressions and get rotated by flowing water and consequently the depressions grow in dimensions.