The ocean surface currents follow clockwise circulatory paths in the northern parts of the Pacific and Atlantic oceans due to the ________
A. Convergence and divergence movements
B. Coriolis force
C. Density differences in seawater
D. Impact of prevailing winds
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Why are the ports of Baltic sea opened for trade in winter?
A. It is tropical belt
B. North Atlantic warm currents flow in this region
C. Local factors keep it warm
D. Western disturbances increase the temperature
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The reason behind broadening the river valley is
A. Corrosion
B. Soil Erosion
C. Attrition
D. Hydraulic Action
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Which one of the following factors is responsible for the change in the regular direction of the ocean currents in the Indian Ocean?
A. Indian Ocean is 'half an ocean'
B. Indian Ocean has Monsoon drift
C. Indian Ocean is a land-locked ocean
D. Indian Ocean has greater variation in salinity
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Imaginary lines connecting places in oceans having equal salinity are called
A. Isotherms
B. Isobars
C. Isohalines
D. Isohyets
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The ideal conditions for coral growth are:
I. water temperature around 20°C
II. tropical waters (between 30°N and 30°S)
III. highly saline water IV. adequate oxygen
A. I, II and IV
B. I, III and IV
C. I, II and III
D. II, III and IV
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Which of the following current is responsible for rise in temperature in westen Europe?
A. Labrador Current
B. Gulf stream
C. Canary Current
D. North Eqatorial
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What is the correct decreasing order of the share of different salts in sea water?
A. Sodium chloride, magnesium chloride, magnesium sulphate, potassium sulphate
B. Sodium chloride, magnesium chloride, potassium sulphate, magnesium sulphate
C. Sodium chloride, magnesium sulphate, potassium sulphate, magnesium chloride
D. None of the above
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Which one of the following European countries borders Atlantic Ocean?
A. Portugal
B. Austria
C. Finland
D. Romania
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The Lena river passes through which country?
A. China
B. USA
C. Russia
D. Brazil
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Which factors influence ocean currents?
I. Coriolis force
II. Local winds
III. Waves
IV. Continent shape
A. I and IV
B. I, III and IV
C. I and III
D. I, II and IV
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The largest delta of the World is
A. Nippon Delta
B. Sicily Delta
C. Ganga Delta
D. Caspian Delta
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The Coast of Norway is an example of
A. Dalmatian Coast
B. Fjord Coast
C. Ria Coast
D. Pelagic Coast
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Find the odd
A. Dead Sea
B. Red Sea
C. Black Sea
D. Caspian Sea
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Ring of Fire is found commonly in
A. Pacific Ocean
B. Atlantic Ocean
C. Indian Ocean
D. Arctic Ocean
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Niagara Falls is located between which of the following pairs of lakes?
A. Lake Superior and Lake Huron
B. Lake Huron and Lake Erie
C. Lake Erie and Lake Ontario
D. Lake Ontario and Lake Huron
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The Dogger Bank, the main fishing area of Europe, lies in
A. Baltic Sea
B. English Channel
C. North Sea
D. Norwegian Sea
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Why are major fishing areas of the world confined to the temperate zone?
I. Cold and warm currents meet, creating conditions favourable for plankton growth
II. The fish of these waters are highly palatable as human food
III. There is a ready mark, in the land masses of the zone
IV. The existence of submarine plateaus help in growth of fish population
A. I, II and IV
B. II, III and IV
C. I, III and IV
D. I, II, III and IV
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Which of the following connects the ocean floor level with the continental level ?
A. Continental slope
B. Continental shelf
C. Epicontinental sea
D. Sea shelf
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In which of the ocean is Sargasso Sea?
A. Atlantic Ocean
B. Pacific Ocean
C. Indian Ocean
D. Arctic Ocean
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