Who postulated the concept of Base level ?

• Walter Penck

• J.W. Powell

• W.M. Davis

• James Hutton

Surface circulation of ocean water is driven by :

• Resisting force

• Tidal force

• Gravitational force

• Blowing wind

• a-i , b-ii , c-iii , d-iv

• a-ii , b-iii , c-iv , d-i

• a-iv , b-ii , c-iii , d-i

• a-ii , b-iv , c-i , d-iii

The speed of an ocean current is about :

• 2% of the speed of prevailing wind.

• 4% of the speed of prevailing wind.

• 6% of the speed of prevailing wind.

• 8% of the speed of prevailing wind.

Consider the following statements :

(a) Nearly 30% of the petroleum production in the world is from the off shore areas.

(b) The exclusive economic zone in the ocean extends 100 nautical miles from the coast.

(c) Only less than 1% of marine area is declared as protected area.

(d) The largest marine protected area is the Great Barrier Reef. 

• (a) and (b)

• (a) , (b) and (d)

• (a) and (d)

• (b) and (c)

"All coral reefs began as fringe reefs around an island." This was indicate in :

• Day's glacial control theory

• Daly's subsidence theory

• Darwin's glacial control theory

• Darwin's subsidence theory

The ocean water was iceberg free during the era :

• Archaean

• Mesozoic

• Cenozoic

• Paleozoic

Who postulated the "Progressive Wave Theory of Tides" ?

• C. Darwin

• William Whewill

• R.A. Haris

• Daly

• a-iv , b-iii , c-ii , d-i

• a-iii , b-ii , c-i , d-iv

• a-i , b-iv , c-iii , d-ii

• a-ii , b-i , c-iv , d-iii

Which one of the following is shown with the help of Isobaths ?

• Salinity of sea water

• Depth of ocean water

• Altitude of oceanic ridge

• Amplitude of wave