Practice Oceans: Currents and Tides – GK Quiz with Answers – Level 3

Consider the following statements about the relief of the ocean floor:

1. The Siberian shelf in the Arctic Ocean is the largest continental shelf in the world.

2. The continental slope has a gentle gradient of about 10° to 15°.

Which of the statements given above is/are correct?

Consider the following statements about ocean water:

1. The thermocline is the boundary zone in which temperature falls rapidly with depth.

2. Salinity is the number of grams of salt dissolved in 100 g of sea water.

3. The Baltic Sea has low salinity because it receives a large amount of fresh river water.

Which of the statements given above is/are correct?

Consider the following statements about ocean waves:

1. In a wave, the water itself travels forward to the shore along with the energy.

2. Most ocean waves are caused by wind.

3. Wavelength is the horizontal distance between two successive crests.

Which of the statements given above is/are correct?

Match List-I with List-II:

Select the correct answer using the codes given below.

Consider the following statements about tides:

1. The semi-diurnal tide, with two high and two low tides a day, is the most common type.

2. Tides that show large variations in height are called mixed tides.

3. A neap tide occurs about seven days after a spring tide.

Which of the statements given above is/are correct?

Consider the following statements about ocean currents:

1. Due to the Coriolis force, ocean water is deflected to the right in the northern hemisphere.

2. Cold currents are usually found on the west coasts of continents in low and middle latitudes.

3. Warm currents flow from the poles towards the equator.

Which of the statements given above is/are correct?

Consider the following statements about the causes of tides:

1. The Sun's gravitational pull is the main cause of tides, and the Moon's pull plays only a minor role.

2. Centrifugal force also contributes to the formation of tides.

3. Two tidal bulges form on the Earth, one facing the Moon and one on the opposite side.

Which of the statements given above is/are correct?

Consider the following statements about ocean water:

1. The surface temperature of ocean water decreases from the equator towards the poles because the poles receive less sunlight.

2. The temperature of ocean water generally rises as depth increases.

3. The salinity of the normal open ocean ranges from 33 to 37 parts per thousand.

Which of the statements given above is/are correct?

Consider the following statements about ocean waves:

1. As a wave passes, the water particles move only in a small circle.

2. Wave height is the horizontal distance between a crest and a trough.

Which of the statements given above is/are correct?

Consider the following statements about ocean currents:

1. Warm currents flow from the poles towards the equator.

2. Because of the Coriolis force, water is deflected to the left in the southern hemisphere.

3. Plankton grow abundantly where warm and cold currents meet.

Which of the statements given above is/are correct?