MCQ Question for Class 11 Geography Chapter 14 Movements of Ocean Water with Answer
Question 1.
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) inner space.
Question 2.
Popular name of the tropical easterlies is
(a) prevailing winds
(b) trade winds
(c) both of these
(d) none of these
Answer: (b) trade winds.
Question 3.
Which force deflects water and winds from their original direction of movement?
(a) coriolis force
(b) gravitational force
(c) atmospheric pressure
(d) none of these
Answer: (a) coriolis force.
Question 4.
Which current is set in motion due to differences in water density?
(a) cold water current
(b) warm water current
(c) gulf stream
(d) thermocline current
Answer: (d) thermocline current.
Question 5.
The system of winds governing the circulation pattern in the northern portion of the Indian ocean is
(a) trade winds
(b) monsoon
(c) prevailing winds
(d) none of these
Answer: (b) monsoon.
Question 6.
The upper part of the wave is known as
(a) trough
(b) crest
(c) wave height
(d) none of these
Answer: (b) crest.
Question 7.
The lower part of the wave is
(a) crest
(b) trough
(c) wavelength
(d) none of these
Answer: (b) trough.
Question 8.
The periodic rise and fall in the level of the water in seas and oceans is
(a) tides
(b) wave
(c) current
(d) none of these
Answer: (a) tides.
Question 9.
The fall of sea level is known as
(a) ebb tide
(b) tide
(c) drift
(d) set
Answer: (a) ebb tide.
Question 10.
Name the tidal crests looking like a vertical wall of water rushing upstream
(a) tidal bore
(b) ebb tide
(c) drift
(d) none of these
Answer: (a) tidal bore.
Question 11.
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) ice-floes.
Question 12.
Huge masses of floating ice whose height ranges from 5-90 mts. are known as
(a) ice-floes
(b) ice-bergs
(c) both of these
(d) none of these
Answer: (b) ice-bergs.
Question 13.
Name the elliptical path formed by moving water due to the coriolis effect:
(a) gyre
(b) drift
(c) trough
(d) tide
Answer: (a) gyre.
Question 14.
Name the currents flowing from low latitudes to high ones
(a) warm currents
(b) cold currents
(c) ocean waves
(d) gulf stream
Answer: (a) warm currents.
Question 15.
Vertical distance between a trough and crest of a wave is known as
(a) wave height
(b) wave length
(c) wave period
(d) none of these
Answer: (a) wave height.
Question 16.
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) 12 hrs. and 26 minutes.
Question 17.
Name the war pi current which flows on the east of Japan
(a) Gulf stream
(b) Kuroshio
(c) Falkland
(d) none of these
Answer: (b) Kuroshio.
Question 18.
Name the important current at Atlantic ocean
(a) Cold current
(b) Gulf stream
(c) Benguela current
(d) none of these
Answer: (b) Gulf stream.
Question 19.
Which current flows along the S.W. coast of Africa?
(a) Cold Benguela current
(b) Falkland current
(c) Kuroshio
(d) Labrador current
Answer: (a) Cold Benguela current.
Question 20.
The time taken by two consecutive crests to pass any fixed point is called
(a) wave length
(b) wave height
(c) wave period
(d) none of these
Answer: (c) wave period.
Question 21.
Wind generated waves near the beach are known as
(a) swell
(b) surf
(c) backwash
(d) none of these
Answer: (b) surf.
Question 22.
The rise and fall of water less than normal is called
(a) spring Tides
(b) neap Tides
(c) tide Bores
(d) swash
Answer: (b) neap Tides.
Question 23.
Name the cold current that flows along the west coast of Africa:
(a)
Labrador current
(b) Falkland current
(c) Canaries current
(d) Bengula current
Answer: (c) Canaries current.
Question 24.
Name the cold current flowing around the globe near Antarctica:
(a) Antarctic drift
(b) Falkland
(c) Kuroshio
(d) Canaries
Answer: (a) Antarctic drift.
II. Fill up the blanks with suitable words
Question 1.
The ……………. water is dynamic.
Answer: ocean
Question 2.
Due to attraction of the sun and the moon, the ocean water is raised up and …………… twice a day.
Answer: fallen down
Question 3.
The ………….. provides the energy to the waves.
Answer: winds
Question 4.
……………. is the rate at which the wave moves through the water and is measured in knots.
Answer: Wave speed
Question 5.
Movement of water caused by meteorological effects are called …………..
Answer: surges
Question 6.
The highest tides in the world occur in the …………… in ………….., Canada.
Answer: Bay of Fundy, Nova scotia
Question 7.
Tides having variations in height are known as …………….
Answer: mixed tides
Question 8.
Differences in water density affect vertical mobility of …………….
Answer: ocean currents
Question 9.
……………. flows eastward across the Atlantic as North Atlantic drift.
Answer: Gulf stream
Question 10.
South equatorial current joins with the ………………. current and it becomes the Agulhas current.
Answer: Mozambique
