Q 1 – Name the saline layer of ocean waters which was identified on the basis of temp erature:
(a) thermocline
(b) holocline
(c) layer of warm water
(d) none of these
(b) holocline
Q 2 – The average time that an element remains dissolved in the ocean before removal is known as
(a) residence time
(b) critical time
(c) mean time
(d) none of these
(a) residence time
Q 3 – What is the average salinity of the ocean water?
(a) 35 per thousand
(b) 350 per thousand
(c) 3.5 per thousand
(d) 3 per thousand
(a) 35 per thousand ‘
Q 4 – Name the mid-oceanic ridge in the North Atlantic Ocean,
(a) Walvis
(b) Dolphin ridge
(c) Challenger
(d) none of these
(b) Dolphin ridge
Q 5 – Name the mid-oceanic ridge in the South Atlantic Ocean.
(a) Challenger ridge
(b) Dolphin ridge
(c) Walvis
(d) Chille
(a) Challenger ridge.
Q 6 – Name the ocean which resembles the shape of ‘S’:
(a) Pacific
(b) Antarctic
(c) Atlantic
(d) Arabian
(c) Atlantic
Q 7 – What is the average annual temperature of all the oceans?
(a) 17.2°C
(b) 1.72°C
(c) 17.5°C
(d) 17.0°C
(a) 1 7.2°C.
Q 8 – Name the largest ocean in the world.
(a) Indian
(b) Pacific
(c) Atlantic
(d) none of these
(b) Pacific.
Q 9 – Which is the deepest ocean of the world?
(a) Pacific
(b) Indian
(c) Atlantic
(d) Antarctic
(a) Pacific.
Q 10 – Which is the deepest part of all the oceans?
(a) Mariana Trench
(b) Bonin Trench
(c) Sunda Trench
(d) Tonga Trench
(a) Mariana Trench
Q 11 – Name the deepest part of the Indian ocean.
(a) Mariana Trench
(b) Sunda Trench
(c) Tonga Trench
(d) none of these
(b) Sunda Trench.
Q 12 – The feature of continental margins of the oceans compared with deep gullies on the land surface is
(a) Submarine Canyon
(b) South western Pacific
(c) South China
(d) none of these
(a) Submarine Canyon.
Q 13 – How much part of the earth is covered by Pacific Ocean?
(a) 1/2 part
(b) 1/4 part
(0) 1/3 part
(d) 2/3 part
(c) 1/3 part.
Q 14 – How much percentage of ocean floor is covered by the continental shelf?
(a) 7.6%
(b) 76%
(c) 76.0%
(d) 1.76%
(a) 7.6%
Q 15 – How much part of the earth is covered by water?
(a) 76%
(b) 71%
(c) 7.1%
(d) 81%
(b) 71%.
Q 16 – Which is the main bank of the world?
(a) Doggar bank
(b) The Grand bank
(c) both of these
(d) none of these
(c) both of these
Q 17 – How much is the depth of Mariana trench?
(a) 4000 m.
(b) 11033 m.
(c) 7800 m.
(d) 3640 m.
(b) 11033 m.
Q 18 – Which is the important property of ocean water?
(a) temperature
(b) salinity
(c) both of these
(d) none of these
(c) both of these.
Q 19 – The mountains which have flat summits are known as
(a) sea mount
(b) canyon
(c) guyots
(d) ridges
(c) guyots.
Q 20 – Abyssal plains are located at the depth of
(a) 2000-6000 m.
(b) 3000-6000 m.
(c) 2000-4000 m.
(d) 3000-7000 m.
(b) 3000-6000 m.
Q 21 – How long is the mid-ocean ridge?
(a) 14000 km.
(b) 1400 km.
(c) 140000 km.
(d) 1.4 km.
(a) 14000 km.
Q 22 – A deep gorge on the continental slope is known as
(a) canyon
(b) submarine trench
(c) ridge
(d) gullies
(a) canyon.
Q 23 – How many types of slopes are there?
(a) 5
(b) 7
(c) 6
(d) 4
(a) 5.
Q 24 – Bermuda is a
(a) pico
(b) cape Verde
(c) coral
(d) none of these
(c) coral.
Q 25 – What is the special feature of the Atlantic Ocean?
(a) mid Atlantic ridge
(b) sea mount
(c) guyot
(d) bank
(a) mid Atlantic ridge
Q 26 – The shelf typically ends at a very steep slope, called ________
(a) Halcoline
(b) Seamount
(c) Oceanic Shelf
(d) Shelf Break
(d) Shelf Break
Q 27 – The Coral reefs are a major characteristic of:
(a) the Indian Ocean
(b) the Pacific Ocean
(c) the Atlantic Ocean
(d) the Mediterranean Sea
(b) the Pacific Ocean
Q 28 – ______ a mountain with pointed summits, rising from the seafloor that does not reach the surface of the ocean
(a) Halcoline
(b) Seamount
(c) Oceanic Shelf
(d) None of the above
(b) Seamount
Q 29 – A mid-ocean ridge is an underwater mountain system formed by
(a) plate tectonics
(b) earthquake
(c) ocean currents
(d) submarine landslides
(a) plate tectonics
Q 30 – Along the coasts, salinity is:
(a) Lowered
(b) Increased
(c) Stable
(d) Unaffected
(a) Lowered
Q 31 – The geographers have divided the oceanic part of the earth into ______ oceans.
(a) Two
(b) Three
(c) Four
(d) Five
(d) Five
Q 32 – Which one of the following is the smallest ocean:
(a) the Indian Ocean
(b) the Arctic Ocean
(c) the Atlantic Ocean
(d) the Pacific Ocean
(b) the Arctic Ocean
Q 33 – Salinity refers to the total amount of
(a) sediments in the water
(b) impurities present in the water
(c) the salt present in the water
(d) heat present in the water
(c) salt present in the water
Q 34 – Which one of the following is not a minor relief feature in the oceans:
(a) Seamount
(b) Atoll
(c) Oceanic Deep
(d) Guyot
(c) Oceanic Deep
Q 35 – ________ is the extended margin of each continent occupied by relatively shallow seas and gulfs.
(a) Oceanic Shelf
(b) Continental shelf
(c) Salocline
(d) Hydra Shelf
(b) Continental shelf
Q 36 – The continental slope connects the continental shelf and _______
(a) the continental shelf
(b) the halocline
(c) the ocean basins
(d) none of the above
(c) the ocean basins
Q 37 – A major portion of sea level is found at:
(a) 10-12 kms below sea level
(b) 6-9 kms below sea level
(c) 3-6 kms below sea level
(d) 1-2 kms below sea level
(c) 3-6 kms below sea level
Q 38 – Identify the element which is not a part of the hydrological cycle:
(a) Evaporation
(b) Hydration
(c) Precipitation
(d) Condensation
b) Hydration
Q 39 – The average depth of continental slope varies between:
(a) 2-20 m
(b) 200-2,000 m
(c) 20-200 m
(d) 2,000-20,000 m.
(b) 200-2000 m
Q 40 – Which one of the following is not a minor relief feature in the oceans:
(a) Seamount
(b) Atoll
(c) Oceanic Deep
(d) Guyot.
(b) Atoll