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A visually engaging representation of ocean tides and currents, featuring waves, the moon, and various currents around the globe.

Tides and Ocean Currents Quiz

Test your knowledge on tides and ocean currents with this engaging quiz! Dive into the fascinating world of marine science and see how well you understand the dynamics of our oceans.

Multiple choice questions about tidal phenomena
Learn new facts about ocean currents
Perfect for enthusiasts and students alike!

53 Questions13 MinutesCreated by SailingWave42

Neap tide occurs at time of_________.

First and third quarter

Second and third quarter

First and fourth quarter

Second and fourth quarter

�A horizontal movement of water caused by gravitational interactions between the sun, moon, and earth is called_________.

Rise of tide

Tidal current

Diurnal

�The vertical distance from the chart sounding datum to a high water datum is called the______.

Tidal current

Diurnal

Rise of tide

�When only one high water and one low water occur during a tidal day, the tide is said to be____.

Diurnal

Rise of tide

Tidal current

�When the tide is diurnal, high and low waters occur__________.

Once a day

Twice a day

Once a month

�When high and low water occurs at about the same time each day, it is due to the effect of the_____.

Sun

Moon

Planet

�The periodic rise and fall of the water resulting from gravitational interactions between the sun, moon, and earth are called_______.

Height of tide

Tide

Perigean tide

�When the tide is semi-diurnal, high and low waters occurs________.

Once a day

Twice a day

Once a month

�The vertical distance from the chart sounding datum to the water surface at any stage of the tide is known as the__________.

Height of tide

Tide

Perigean tide

�The tide that occurs when the moon is at the point in its orbit nearest the earth is a / an______.

Height of tide

Tide

Perigean tide

�The tide that occurs when the moon crosses the equator is the_________.

Spring tides

Apogean tide

Equatorial tide

Solar tide

�The tide that occurs when the moon is farthest from the earth is a/an_________.

Spring tides

Apogean tide

Equatorial tide

Solar tide

�The part of the tide that is due to the tide-producing force of the sun is called__________.

Spring tides

Apogean tide

Equatorial tide

Solar tide

�It is the difference in height between consecutive high and low waters________.

Range of tide

Mixed tide

Neap tide

Stand

�When two high waters and two low waters occur during a tidal day, the tide is said to be_______.

Diurnal

Semi-diurnal

�The type of tide with a large inequality in either the high and / or low water heights is the______.

Range of tide

Mixed tide

Neap tide

Stand

�Tides with lower high water and higher low water which occur at times of first and third quarter is the_________.

Range of tide

Mixed tide

Neap tide

Stand

�The state of the tide at high or low water when there is no sensible change in the height of the tide is called________.

Range of tide

Mixed tide

Neap tide

Stand

�The predominating type of tide throughout the world is_______.

Diurnal tide

Semi-diurnal tide

Question 23  The tide that occurs when the moon is at its maximum semi-monthly declination North or South is the_________.

Tropic tide

Mixed tide

Range of tide

Neap tide

The Benguela current, Which direction flows in along the SW coast of Africa?

Southeasterly

Northeasterly

Southwesterly

Northwesterly

The two most effective generating forces of the ocean currents are________.

Wind and density same in the water

Wind and density differences in the water

On a voyage from Halifax, N.S. to Dakar, West Africa, the Canary Current will_______.

Set the vessel to the left

Set the vessel to the right

Which of the following current is "warm" based on the latitude in which it originates and the effect it has on climate?

Benguela Current

Labrador Current

Agulhas Current

Kuroshio

On a voyage from Cape town to London, the favorable ocean current off the coast of Africa is the______.

Benguela Current

Labrador Current

Agulhas Current

Kuroshio

Which cold current which meets the warm Gulf Stream between latitudes 40° and 43° North to form the cold wall?

Benguela Current

Labrador Current

Agulhas Current

Kuroshio

What current that in many respect is similar to the Gulf Stream?

Benguela Current

Labrador Current

Agulhas Current

Kuroshio

In the N. Hemisphere, the major ocean currents tend to flow__________.

Counter-Clockwise around the N. Atlantic and N Pacific Ocean

Clockwise around the N. Atlantic and N Pacific Ocean

A ship steaming across the North Pacific from Japan to Seattle is likely to experience_________.

Favorable currents for practically the entire crossing

Which is southern current approaches the coast of Africa, it divides the main part flowing south to form the warm?

Benguela Current

Labrador Current

Agulhas Current

Kuroshio

One of the causes of the ocean currents is density differences in the water. This is true because_______.

Surface water flows from an area of high density to one of low density.

Which of the following currents is responsible for the movement of icebergs into the North Atlantic shipping lanes?

Benguela Current

Labrador Current

Agulhas Current

Kuroshio

In which month will the equatorial countercurrent be strongest?

September

March

August

December

Which current would you encounter in a direct passage from South Africa to Argentina?

South Atlantic

North Atlantic

North Pacific

South Pacific

Which direction does the Brazil current tend to flow ?

Easterly

Westerly

Southerly

Northerly

The Equatorial Countercurrent in the N. Hemisphere generally sets______.

Southwest

Southeast

Northwest

Northeast

On a voyage from New York to Durban, South Africa, what you could expect the agulhas Current to present will strong?

Head current

Benguela Current

Kuroshio

Your vessel is in the Kuroshio Current. In which direction would you expect to be set?

To the south and east

To the south and west

To the north and east

To the north and west

In the north hemisphere you are caught in the dangerous semicircle with plenty of sea room available. The best course of action is to bring wind on the___________?

Starboard bow and make as much headway as possible

Starboard quarter and make as much headway as possible

Port bow and make as much headway as possible

Port quarter and make as much headway as possible

What is/are predominant feature (s) of the dangerous semicircle of a hurricane?

A. Higher winds

B. Winds will carry the vessel directly into the path of the hurricane

Both a and b

In the tropics, which of the following indicates the arrival of a hurricane at your position within 24 to 36 hours?

Unusually good weather with above average pressures followed by a slow fall of 4 millibars in six hours.

Unusually good weather with above average pressures followed by a slow fall of 5 millibars in six hours.

The usual sequence of directions in which a tropical cyclone moves in the Southern Hemisphere is __________.

Southwest, south, and southeast

Southwest, north, and southeast

Southwest, south, and northeast

The approximate distance to a storm center can be determined by noting the hourly rate of fall of the barometer. If the rate of fall is 0.08 - 0.12 inches, what is the approximate distance to the storm center?

100 to 120

150 to 180

90 to 100

80 to 100

Which condition does not indicate the approach of a tropical storm?

Increase in wind velocity

Decrease in wind velocity

Remain wind velocity

In the south hemisphere if you are caught in the left semicircle of a tropical storm you should bring the wind?

On the port quarter, hold course and make as much way as possible.

On the starboard bow, hold course and make as much way as possible.

On the port bow, hold course and make as much way as possible.

On the starboard quarter, hold course and make as much way as possible.

You are steaming eastward in the North Atlantic in an extratropical cyclonic storm and the wind is dead ahead. According to the law of Buys Ballot, the center of the low pressure lies __________.

To the north

To the south

To the east

To the west

Which condition exists in the eye of a hurricane?

An extremely low barometric pressure

An extremely high barometric pressure

Which of the following indicates that a tropical cyclone can be expected at your position within 24 to 48 hours?

A diurnal inequality of 6 millibars in the barometric reading

A diurnal inequality of 10 millibars in the barometric reading

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Tides and Ocean Currents Quiz

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