Waves are caused by…….
a) Earth rotation
b) wind
c) regular movement of water
d) none
Ocean currents
are caused by……….winds.
a) Westerlies
b) Periodic
c) Permanent
d) Monsoon
How many types of ocean currents?
a) 2
b) 3
c) 4
d) 5
The currents which moves from the equator in north and south direction towards the poles are called………..
a) warm currents
b) cold currents
c) both a and b
d) none of these
Those currents which move from the North or South pole toward the equator are called…….
a) warm currents
b) cold currents
c) both a and b
d) none of these
Which of the following is/are caused by the pull of moon on water surface?
a) Tide
b) current
c) wave
d) all of these
