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Movements of Ocean Water

Movements of Ocean Water, Geography, XI

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following statements is/are incorrect?

a. Steep waves are fairly young ones and are formed by local wind.
b. Slow and steady waves originate from far away places.
c. The maximum wave height is determined by the gravitational pull.

  1. only a
  2. only b
  3. only c
  4. only a and b
  5. a, b and c
Question 2 Multiple Choice (Single Answer)

Surges are

  1. the periodical rise and fall of the sea level, once or twice a day
  2. the major cause for the occurrence of tides
  3. created on opposite sides of Earth due to the moon's gravitational force and centrifugal force
  4. the tides that are channeled between islands or into bays and estuaries
  5. the various movements of water caused by meteorological effects
Question 3 Multiple Choice (Single Answer)

Which of the following is/are the major cause(s) for the occurrence of tides?

a. Sun's gravitational pull
b. Moon's gravitational pull
c. Earth's centrifugal force

  1. a only
  2. b only
  3. c only
  4. a and b
  5. a, b and c
Question 4 Multiple Choice (Single Answer)

Which of the following is the most common tidal pattern?

  1. Semi-diurnal tides
  2. Diurnal tides
  3. Mixed tides
  4. Spring tides
  5. Neap tides
Question 5 Multiple Choice (Single Answer)

Which of the following statements is/are correct about waves?

a. Waves grow larger as they move and absorb energy from the wind.
b. Waves slow down at the beach due to friction occurring between dynamic water and sea floor.
c. Waves break when the depth of water is less than the wavelength of the wave.

  1. Only a
  2. Only b
  3. Only c
  4. Both a and b
  5. Both b and c
Question 6 Multiple Choice (Single Answer)

Match the following columns:

 
Column I 
        </strong>|<strong>Column II</strong>|

|a. Wave amplitude|1. It is the time interval between two successive wave crests or troughs as they pass a fixed point.|
|b. Wave period|2. It is the horizontal distance between two successive crests.|
|c. Wave length|3. It is one-half of the wave height.|

  1. a - 1, b - 3, c - 2
  2. a - 2, b - 1, c - 3
  3. a - 3, b - 2, c - 1
  4. a - 3, b - 1, c - 2
  5. a - 2, b - 1, c - 3
Question 7 Multiple Choice (Single Answer)

Choose the incorrect statement.

  1. The tidal bulges on wide continental shelves have greater height.
  2. When tidal bulges hit the mid-oceanic islands, they become low.
  3. The shape of bays and estuaries along a coastline can reduce the intensity of tides.
  4. Funnel-shaped bays greatly change tidal magnitudes.
  5. Surges are not regular like tides.
Question 8 Multiple Choice (Single Answer)

Which of the following statements is/are correct?

a. The ‘tide-generating’ force is the difference between the gravitational attraction of the moon and the centrifugal force.
b. On the surface of Earth, the horizontal tide generating forces are less dominant than the vertical forces in generating the tidal bulges.
c. The gravitational pull of Earth creates the second bulge away from the moon.

  1. a only
  2. b only
  3. c only
  4. a and b
  5. b and c
Question 9 Multiple Choice (Single Answer)

Which of the following tides has/have successive high and low tides of the same height?

a. Diurnal tides
b. Semi-diurnal tides
c. Mixed tides

  1. a only
  2. b only
  3. c only
  4. a and b
  5. a, b and c
Question 10 Multiple Choice (Single Answer)

Which of the following statements is/are correct?

a. The water in upper 200 m of the ocean constitutes the surface currents.
b. Surface currents constitute about 10 percent of all the water in the ocean.
c. Currents in deep waters move around the ocean basins due to variations in the density and gravity.

  1. a only
  2. b only
  3. c only
  4. b and c
  5. a, b and c
Question 11 Multiple Choice (Single Answer)

Which of the following statements is/are correct?

a. Sometimes, the height of high tide varies depending upon the position of sun and moon with respect to Earth.
b. The time between the high tide and low tide, when the water level is falling, is called ebb.
c. The time between the low tide and high tide, when the tide is rising, is called flow or flood.

  1. a only
  2. b only
  3. c only
  4. a and c
  5. a, b and c
Question 12 Multiple Choice (Single Answer)

Which of the following statements is incorrect about ocean currents?

  1. They represent a regular volume of water in a definite path and direction.
  2. Coriolis force causes the water to move to the left in the northern hemisphere and to the right in the southern hemisphere.
  3. Cold water ocean currents occur when the cold water at the poles sinks and slowly moves towards the equator.
  4. Gyres produce large circular currents in all the ocean basins.
  5. Speed of current is measured by its drift.
Question 13 Multiple Choice (Single Answer)

Match the following:

 
Column I 
        </strong>|<strong>Column II</strong>|

|a. Perigee|1. Earth is farthest from the sun.|
|b. Apogee|2. Moon's orbit is farthest from Earth.|
|c. Perihelion|3. Earth is closest to the sun.|
|d. Aphelion|4. Moon‘s orbit is closest to the Earth.|

  1. a - 1, b - 3, c - 2, d - 4
  2. a - 2, b - 3, c - 1, d - 4
  3. a - 3, b - 1, c - 4, d - 2
  4. a - 4, b - 2, c - 3, d - 1
  5. a - 2, b - 4, c - 1, d - 3
Question 14 Multiple Choice (Single Answer)

Which of the following statements is/are incorrect?

a. Water moves ahead from one place to another through waves.
b. Tides are the vertical motion of waves.
c. The upwelling of cold water from subsurface and the sinking of surface water are forms of vertical motion of ocean waves.

  1. only a
  2. only b
  3. only c
  4. only a and b
  5. a, b and c
Question 15 Multiple Choice (Single Answer)

The actual motion of water beneath the waves is

  1. vertical
  2. horizontal
  3. circular
  4. linear
  5. uniform
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