CBSE Class 11 Movements of Ocean Water MCQs

Question : Which is the world of the oceans and seas?
(a) earth’s interior
(b) surface of water
(c) inner space
(d) none of these

Answer :  C

Question : Who is the poet of the poem 'The Voice of the Rain'?
(a) Walt Whitman
(b) Kushwant Singh
(c) Naipul
(d) Shirley Toulson

Answer :  A

Question : Coriolis effect cause surface currents to turn anticlockwise in
(a) Southern Hemisphere
(b) Northern Hemisphere
(c) Eastern Hemisphere
(d) Western Hemisphere

Answer :  A

Question : Heyerdahl and his crew landed on Polynesia after day
(a) 15th
(b) 97th
(c) 75th
(d) 79th

Answer :  B

Question : The lower part of the wave is
(a) crest
(b) trough
(c) wavelength
(d) none of these

Answer :  B

Question : The process by which water continually changes its form and circulates between oceans, atmosphere and lan(d)
(a) Water cycle
(b) Tides
(c) Ocean currents
(d) Rain water

Answer :  A

Question : Name the cold current flowing around the globe near Antarctica:
(a) Antarctic drift
(b) Falkland
(c) Kuroshio
(d) Canaries

Answer :  A

Question : Name the ice fields whose height is not more than four metres:
(a) ice-bergs
(b) ice-floes
(c) salinity
(d) none of these

Answer :  B

Question : Sea water contains -
(a) 97.3% of salt.
(b) 2% of salt.
(c) 0.68% of salt.
(d) 0.973% of salt.

Answer :  A

Question : What is the time interval between two successive tides?
(a) 12 hrs. and 26 minutes
(b) 12 hrs.
(c) 12 hrs. and 20 minutes
(d) 24 hrs. and 26 minutes

Answer :  A

Question : As the surface currents strike a continent they
(a) coincide
(b) deflect
(c) react
(d) isolate

Answer :  B

Question : Why does the rain descend to the earth?
(a) to wash the drought and provide water
(b) she provides life on earth
(c) it beautify and purify the earth
(d) it provides life

Answer :  A

Question : The Labrador and Gulf stream are the examples of:
(a) Tides
(b) Ocean currents
(c) Tsunami
(d) Waves

Answer :  B

Question : Theory of Polynesians migration from Peru across pacific was given by
(a) Heyerdahl
(b) Jacque
(c) Jason
(d) John

Answer :  A

Question : Which one of the following seas is the shallowest?
(a) Baltic
(b) Azov
(c) Yellow
(d) North

Answer :  B

Question : Wind generated waves near the beach are known as
(a) swell
(b) surf
(c) backwash
(d) none of these

Answer :  B

Question : The earth reaches its perihelion in:
(a) October
(b) September
(c) July
(d) January

Answer :  D

Question : The ocean currents transfer heat from-
(a) one sea or ocean to another
(b) one cost to another
(c) the surface of the sea to greater depths
(d) lower to higher latitudes

Answer.   D

Question : Gulf stream is
(a) A river in the Gulf
(b) An ocean current
(c) A second name of jet stream
(d) A local wind

Answer.   B

Question : Tidal range is quite high-
(a) in equatorial regions of ocean
(b) in shallow continental shelves
(c) in narrow estuaries
(d) around island

Answer.   C

Question : Wave speed is the rate at which the wave moves through the water and is measured in
(a) Knots
(b) Miles
(c) Kilometer
(d) Kilogram

Answer :  A

Question : From where does the song originate?
(a) from heaven
(b) from ocean
(c) from the heart of the singer
(d) from the soul of earth

Answer :  C

Question : The Agulhas Current flow s in
(a) Indian Ocean
(b) Pacific Ocean
(c) Atlantic Ocean
(d) Southern Ocean

Answer :  A

Question : The stream with longest surface current is the
(a) Gulf stream
(b) Mary land stream
(c) Virginia stream
(d) Brook stream

Answer :  A

Question : Which of the following factors influence the movement of ocean water?
(a) Temperature
(b) Salinity of Ocean
(c) Density of Ocean Water
(d) Wind System
(e) Coriolis Force

Choose the correct codes:

(a) a,b and c
(b) b and c
(c) a,b,c and e
(d) All of the above

Answer : D

Question : The biggest island of the Indian Ocean is
(a) Maldives
(b) Madagascar
(c) Lakshadweep
(d) Sumatra

Answer : B

Question :  Which one of the following is not the part of North Atlantic ocean current system ?
(a) Irminger current
(b) Labrador current
(c) Brazilian current
(d) Canarie current

Answer : C

Question :  Upward and downward movement of ocean water is known as the :
(a) tide
(b) current
(c) wave
(d) none of the above

Answer :  A

Question :  What does the poet ask to the soft - falling shower?
(a) What do you do?
(b) What is your name?
(c) Who are you?
(d) How are you doing?

Answer :  C

Question :  Which one of the following statements is not true about subsidence theory of Coral reefs?
(a) The theory has been postulated by Charles Darwin.
(b) According to the theory coral polyps grow both in shallow and deep oceanic waters.
(c) Fringing reef, barrier reef and atolls arc successive stages of coral reef development.
(d) Reef building starts from submarine plate form.

Answer : B

Question :  The water which flows on top of ocean is
(a) more dense
(b) less dense
(c) coldest
(d) hottest

Answer : B

Question :  Which one of the following is an artificial enclosure for keeping small house plants?
(a) Terrarium
(b) Thermosphere
(c) Climate
(d) Evaporation

Answer : A

Question :  Which of the following is a warm current ?
(a) Gulf stream
(b) Humboldt current
(c) Peruvian current
(d) Benguela current

Answer : A

Question :  Which of the following is not the relevant use of tidal movement?
(a) Tidal flows are of great importance in navigation.
(b) Tides help in the development of coral reefs.
(c) Tides are also helpful in desilting the sediments and in removing polluted water from river estuaries.
(d) Tides are used to generate electrical power.

Answer : B

Question :  The cold Labrador current brings nine months winter
(a) USA
(b) Eastern Newfoundland
(c) Western Norway
(d) North Sweden

Answer : B

Question :  The lesser distance of the moon from the earth is called:
(a) Aphelion
(b) Perigee
(c) Perihelion
(d) Apogee

Answer :  D

Question :  What happens to the earth when the rain falls back on the surface of earth?
(a) it provides water
(b) it beautifies and purifies the earth
(c) it helps in greenary
(d) it provides water to flora and fauna

Answer : B

Question :  Consider the following types of tides based on their frequency of occurrence and their height:
(a) In Diurnal tide, there is only one high tide and one low tide during each day.
(b) Mixed tides generally occur along the west coast of South-East Asia
(c) In Semi-diurnal tide, successive high or low tides of the same height occur.
Which of the above statements is true?

(a) Only 1
(b) 1 and 3
(c) Only 2
(d) 1, 2 and 3

Answer :  B

Question :  The highest salinity is found in which of the following lakes?
(a) Van Lake
(b) Dead sea
(c) Balkash lake
(d) Baikal lake

Answer :  B

Question :  The distance between the earth and the moon is minimum when the moon is in :
(a) Aphelion
(b) Perigee
(c) Perihelion
(d) Apogee

Answer :  B

Question :  When did Tsunami strike the Indian ocean?
(a) 26 December, 2004
(b) 26 December, 2005
(c) 26 December, 2006
(d) 26 December, 2007

Answer : A

Question :  Spring tides are caused :
(a) As result of the moon and the sun pulling the earth gravitationally in the same direction.
(b) As result of the moon and the sun pulling the earth gravitationally the opposite direction.
(c) Indention in the coast line.
(d) None of the above.

Answer : A

Question :  The factor that affects the origin and movement of currents is
(a) river flow
(b) salinity and density of water
(c) tides
(d) prevailing winds

Answer : B

Question :  Which of the following factors are responsible for the change in the regular direction of the ocean currents in the Indian Ocean?
(a) Indian Ocean is only ‘half an ocean’.
(b) Indian ocean has monsoon drift.
(c) Indian ocean is a landlocked ocean
(d) Indian ocean has greater variations in salinity.

Answer : B