geomorphology & earth landforms section 3 Practice Questions Answers Test with Solutions & More Shortcuts

Question : 31 [IAS (Pre) 2011]

What could be the main reason/ reasons for the formation of the African and Eurasian desert belt?

  1. It is located in sub-tropical high-pressure cells.
  2. It is under the influence of warm ocean currents.
Which of the statements given above is/are correct

a) Both 1 and 2

b) Only 1

c) Neither 1 nor 2

d) Only 2

Answer: (b)

Question : 32 [IAS (Pre) 2007]

Which one of the following cities does not have the same clock time as that of the other three Cities at any given instant?

a) Accra (Ghana)

b) London (UK)

c) Addis Ababa (Ethiopia)

d) Lisbon (Portugal)

Answer: (c)

Question : 33

Which of the following are the reasons for the formation of metamorphic rocks?

  1. High temperatures and pressures at depth cause changes in mineralogy, texture and composition.
  2. Changes take place in the solid-state by crystallisation and chemical reactions.
  3. Temperatures are greater than 150°, less than 400°.
Select the correct answer using the codes given below.

a) 2 and 3

b) 1 only

c) 1, 2 and 3

d) 1 and 2

Answer: (b)

  • Metamorphic rock is any sedimentary or igneous rock that has been changed or morphed, because of pressure and heat.
  • High temperatures and pressures at depth cause changes in mineralogy, texture and composition.
  • Changes take place in a solid-state by recrystallisation and chemical reactions.
  • Temperatures were greater than 250°, less than 700°.
  • Regional Metamorphism - High pressures and temperatures derive from regional collision, deformation and mountain building.
  • Contact Metamorphism - Locally high temperatures, adjacent to intrusions.

Question : 34

Which of the following is the highest mountain peak of the U.S.A.?

a) Mauna Lao

b) Albert

c) Mc Kinley

d) Kilauea

Answer: (c)

McKinley is the highest mountain peak in the USA. Mount McKinley or Denali is the highest mountain peak in North America, with a summit elevation of 20,237 feet above sea level.

At some 18,000 feet, the base to peak rise is considered the largest of any mountain situated entirely above sea level.

Question : 35 [UGC (Geog) 2016]

The unconsali dated rock material deposited by surface wash at the base of a clipff is called

a) Morcines

b) Alluvium

c) Silt

d) Colluvium

Answer: (d)

Colluvium is a general name for loose, unconsolidated sediments that have been deposited at the base of the hill slopes by either rain wash, sheet wash, slow continuous down slope creep, or a variable combination of these processes.

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