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Geomorphology - Geography Objective Questions with Answers | Page-10

Questions
46 Which of the following constituents of the Pelagic sediment is maximum in area wise distribution ?
A Red clay
B Diatom
C Radiolarian ooze
D None of the above

Answer: Option [A]

The correct answer is Red clay. Pelagic red clay, also known as simply red clay, brown clay or pelagic clay, is a type of pelagic sediment. Pelagic clay accumulates in the deepest and most remote areas of the ocean.

47 Continental drift refers to
A The vertical movement of the continents on a small scale
B The vertical movement of the continents on a vast scale
C The horizontal movement of the continents on a small scale
D The horizontal movement of the continents on a vast scale

Answer: Option [D]

Continental drift refers to the horizontal movement of the continents on a vast scale. Continental drift is the hypothesis that the Earth's continents have moved over geologic time relative to each other, thus appearing to have "drifted" across the ocean bed. The idea of continental drift has been subsumed into the science of plate tectonics, which studies the movement of the continents as they ride on plates of the Earth's lithosphere.

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48 Which of the following waves are responsible for most of the destructive force of earthquake ?
A R-wave
B S-wave
C L-wave
D All of the above

Answer: Option [C]

The correct answer is L-wave. During an earthquake, surface waves are the seismic waves that cause the most damage. Unlike other seismic waves that move deep inside the Earth, surface waves move along just under the surface of the Earth like waves in water.

49 Lave cones are
A Fold mountains
B Fault mountains
C Mountains of accumulation
D Relict mountains

Answer: Option [C]

Lave cones are Mountains of accumulation. Volcanic Mountains are formed due to the accumulation of volcanic material. Therefore they are called "Mountains of accumulation".

50 Processes that shape the earth’s surface include
A Hypogene processes
B Geomorphic processes
C Tetra-tonsorial processes
D None of the above

Answer: Option [B]

Processes that shape the earth’s surface include Geomorphic processes. The geomorphic process means bringing about changes in the configuration of the Earths surface, due to physical stresses and chemical actions on materials present on earth. The physical and chemical action are due to endogenic and exogenic forces.

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