Who among the following scholars has given the Subsidence Theory

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11.

Who among the following scholars has given the Subsidence Theory relating to coral reefs ?

  • Dally

  • Davis

  • Dutton

  • Darwn 


D.

Darwn 

Charles Darwin postulated his subsidence theory first in 1837 and modified it in the year 1842  during his voyage on the "Beagle".


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12.

Which one of the following regions is with high ocean water salinity ?

  • Equatorial

  • Polar

  • Sub-tropical

  • Sub-polar


13.

Which one of the following is responsible for the greatest movements of all the tides ?

  • Size of the Ocean

  • Shape of the continents 

  • Gravitational attraction

  • Salinity of the Oceans


14.

Which one of the following percentages of distance from the Earth surface is correct for 'perigee' of Moon than 'apogee' ?

  • 2%

  • 5%

  • 8%

  • 12%


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15.

ASSERTION (A) : The western sides of the oceans are always warmer than the eastern side.

REASON (R) : The movement of the major ocean currents is in the western side.

  • Both (A) and (R) are true and (R) is the correct explanation of (A).

  • Both (A) and (R) are true , but (R) is the correct explanation of (A).

  • (A) is true, but (R) is false.

  • (A) is false, but (R) is true.


16.

Who among the following correlated the colour of ocean water and its salinity ?

  • Al-Masudi

  • Al-Maqdisi

  • Ibn-Khaldun

  • Ibn-Sina


17.

Which one of the following values of temperatures is correct for the average freezing point for seawater in Arctic and Antarctic seas ?

  • 2°C

  • 0°C

  • -2°C

  • -10°C


18.

ASSERTION (A) : The moon produces greater percentage of Earth's tides than the Sun.

REASON (R) : The Sun is closer to the Earth than the Moon.

  • Both (A) and (R) are true and (R) is the correct explanation of (A).

  • Both (A) and (R) are true but (R) is not the correct explanation of (A).

  • (A) is true , but (R) is false.

  • (A) is false , but (R) is true.


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19.

The genral depth of abyssal plains varies between :

  • 1000 - 6000 metres

  • 2000 - 6000 metres

  • 3000 - 6000 metres

  • 4000 - 6000 metres


20.

LIST I

(Ocean Deeps)

LIST II

(Location)

(a) Challenger (1) South Pacific
(b) Aldrich (2) North Atlantic
(c) Romanche (3) North Pacific
(d) Nares (4) South Atlantic
  • a-3 , b-1 , c-4 , d-2

  • a-4 , b-3 , c-2 , d-1

  • a-1 , b-2 , c-3 , d-4

  • a-2 , b-4 , c-1 , d-3


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