Q 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
(c) inner space.
Q 2 – Popular name of the tropical easterlies is
(a) prevailing winds
(b) trade winds
(c) both of these
(d) none of these
(b) trade winds
Q 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
(a) coriolis force.
Q 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
(d) thermocline current.
Q 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
(b) monsoon.
Q 6 – The upper part of the wave is known as
(a) trough
(b) crest
(c) wave height
(d) none of these
(b) crest.
Q 7 – The lower part of the wave is
(a) crest
(b) trough
(c) wavelength
(d) none of these
(b) trough.
Q 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
(a) tides.
Q 9 – The fall of sea level is known as
(a) ebb tide
(b) tide
(c) drift
(d) set
(a) ebb tide
Q 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
(a) tidal bore.
Q 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
(b) ice-floes.
Q 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
(b) ice-bergs.
Q 13 – Name the elliptical path formed by moving water due to the coriolis effect:
(a) gyre
(b) drift
(c) trough
(d) tide
(a) gyre.
Q 14 – Name the currents flowing from low latitudes to high ones
(a) warm currents
(b) cold currents
(c) ocean waves
(d) gulf stream
(a) warm currents
Q 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
(a) wave height
Q 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
(a) 12 hrs. and 26 minutes
Q 17 – Name the war pi current which flows on the east of Japan
(a) Gulf stream
(b) Kuroshio
(c) Falkland
(d) none of these
( b) Kuroshio.
Q 18 – Name the important current at Atlantic ocean
(a) Cold current
(b) Gulf stream
(c) Benguela current
(d) none of these
(b) Gulf stream
Q 19 – Which current flows along the S.W. coast of Africa?
(a) Cold Benguela current
(b) Falkland current
(c) Kuroshio
(d) Labrador current
(a) Cold Benguela current.
Q 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
(c) wave period
Q 21 – Wind generated waves near the beach are known as
(a) swell
(b) surf
(c) backwash
(d) none of these
(b) surf
Q 22 – The rise and fall of water less than normal is called
(a) spring Tides
(b) neap Tides
(c) tide Bores
(d) swash
(b) neap Tides.
Q 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
(c) Canaries current.
Q 24 – Name the cold current flowing around the globe near Antarctica:
(a) Antarctic drift
(b) Falkland
(c) Kuroshio
(d) Canaries
(a) Antarctic drift
Q 25 – Seaward movement of water is known as:
(a) Undertow
(b) Ebb
(c) Current
(d) Flood
(a) Undertow
Q 26 – The most common tidal pattern, featuring two high tides and two low tides each day is called
(a) Neap tide
(b) Mixed tide
(c) semi-diurnal tide
(d) Diurnal tide
(c) Semi-diurnal tide
Q 27 – Huge masses of floating ice are known as:
(a) Current
(b) Ebb
(c) Icebergs
(d) Flood
(c) Icebergs
Q 28 – 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
(b) salinity and density of water
Q 29 – ______causes waves to travel in the ocean and the energy is released on shorelines.
(a) Wind
(b) Land
(c) Water
(d) Soil
(a) Wind
Q 30 – Wave amplitude is:
(a) The height of the wave
(b) The breadth of the wave
(c) Half of the wave height
(d) It is the time interval between two successive waves
(c) Half of the wave height
Q 31 – The current of the Atlantic ocean is
(a) west wind drift
(b) Gulf stream
(c) Equatorial counter current
(d) Alaska current
(b) Gulf stream
Q 32 – The time between the high tide and low tide, when the water level is falling, is called:
(a) drift
(b) nab
(c) ebb
(d) current
(c) ebb
Q 33 – The current of the Indian Ocean is
(a) The west wind drift
(b) Labrador
(c) California
(d) Kuroshio
(a) The west wind drift
Q 34 – The Thermodynamics of the ocean are:
(a) Currents
(b) Waves
(c) Tides
(d) Salinity
(d) Salinity
Q 35 – The time between the low tide and high tide, when the tide is rising, is called:
(a) drift
(b) flood
(c) ebb
(d) current
(b) flood
Q 36 – 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
(a) Knots
Q 37 – Upward and downward movement of ocean water is known as the:
(a) Tide
(b) Current
(c) Wave
(d) None of the above.
(a) Tide
Q 38 – 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 in the opposite direction.
(c) Indention in the coast line.
(d) None of the above.
(a) As result of the moon and the sun pulling the earth gravitationally in the same direction.
Q 39 – The distance between the earth and the moon is minimum when the moon is in:
(a) Aphelion
(b) Perigee
(c) Perihelion
(d) Apogee.
(b) Perigee
Q 40 – The earth reaches its perihelion in:
(a) October
(b) September
(c) July
(d) January
(d) January