geomorphology & earth landforms section 4 Practice Questions Answers Test with Solutions & More Shortcuts

Question : 36 [IAS (Pre) 1999]

A ship is moving from the Eastern side of Aleutian Islands towards Dutch harbor. It crosses 180º meridian on 1st January, 1999 at 23:30 hr. After crossing the meridian captain of the ship will note what time and date in his diary?

a) January 3, 00:30 hr

b) January 1, 00:30 hr

c) January 4, 00:30 hr

d) January 2, 00:30 hr

Answer: (d)

Question : 37 [UPPCS (Pre)(Re. Exam) 2015]

Which of the following periods has generally been considered to be the ‘Littile Ice Age’?

a) 1650 A.D. - 1870 A.D.

b) 750 A.D. - 850 A.D.

c) 8000 to 10,000 years B.P. (Before Present)

d) 950 A.D. - 1250 A.D.

Answer: (a)

Question : 38 [SSC CML 2000]

Hanging Valley is very common in

a) glaciated areas

b) high mountains

c) coastal belt

d) sub-Arctic region

Answer: (a)

When the glaciers melt, the tributary troughs are left as hanging valleys high on the walls of the main glacial valley. A hanging valley is a tributary valley with the floor at a higher relief than the main channel into which it flows.

They are most commonly associated with U-shaped valleys when a tributary glacier flows into a glacier of larger volume.

Question : 39 [SSC GL 2014]

Hydraulic Action is a type of erosion caused by

a) Glacier

b) Running water

c) None of these

d) Wind

Answer: (b)

Hydraulic action is one of the main forms of river erosion (example of erosion due to running water) in which the force of the river against the banks can cause air to be trapped in cracks and crevices.

The pressure weakens the banks and gradually wears it away.

Question : 40 [SSC DEO & LDC 2014]

Widening of a river valley takes place due to

a) Corrasion

b) Corrosion

c) Hydraulic action

d) Lateral erosion

Answer: (d)

Lateral or sideways erosion widens the river valley; while, Vertical or downward erosion deepens the river valley. Due to continued lateral erosion, the river valley increasingly becomes broader and shallower.

The valley slopes are also eroded by weathering and mass wasting and by the development of tributary valleys.

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972 Geomorphology & Earth landforms based indian geography mcq section 4 question answer with explanation pdf

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