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Oceanography and Underwater Phenomena Quiz

#1

Which ocean is the largest by surface area?

Pacific Ocean
Explanation

The Pacific Ocean is the largest ocean by surface area.

#2

What is the primary driver of ocean currents?

Wind
Explanation

Wind is the primary driver of ocean currents.

#3

Which of the following oceanic features is characterized by a circular current system with calm waters at its center?

Eddy
Explanation

An eddy is characterized by a circular current system with calm waters at its center.

#4

Which of the following is NOT a primary factor affecting tides?

Wind
Explanation

Wind is NOT a primary factor affecting tides.

#5

Which of the following is NOT a major ocean basin?

Mediterranean Ocean
Explanation

The Mediterranean Ocean is NOT a major ocean basin.

#6

What is the name for the phenomenon where warm ocean currents meet cold ocean currents?

Thermohaline circulation
Explanation

Thermohaline circulation is the phenomenon where warm ocean currents meet cold ocean currents.

#7

Which underwater feature is formed by the accumulation of coral polyps?

Atoll
Explanation

An atoll is an underwater feature formed by the accumulation of coral polyps.

#8

Which of the following is not a type of marine pollution?

Volcanic ash deposition
Explanation

Volcanic ash deposition is not a type of marine pollution.

#9

What is the name for the boundary where two tectonic plates move apart, leading to volcanic activity and seafloor spreading?

Divergent boundary
Explanation

A divergent boundary is where two tectonic plates move apart, leading to volcanic activity and seafloor spreading.

#10

What is the name for the phenomenon where warm surface waters move away from the equator, carrying heat toward the poles?

Thermohaline circulation
Explanation

Thermohaline circulation is the phenomenon where warm surface waters move away from the equator, carrying heat toward the poles.

#11

What is the name for the process of converting seawater into freshwater?

Desalination
Explanation

Desalination is the process of converting seawater into freshwater.

#12

Which underwater topographical feature is the deepest known point in the Earth's seabed?

Trench
Explanation

A trench is the deepest known point in the Earth's seabed.

#13

Which gas dissolved in seawater contributes to ocean acidification?

Carbon dioxide
Explanation

Carbon dioxide dissolved in seawater contributes to ocean acidification.

#14

What is the term for the zone where oceanic and continental plates collide, resulting in the denser oceanic plate being forced beneath the lighter continental plate?

Subduction zone
Explanation

A subduction zone is where oceanic and continental plates collide, with the denser oceanic plate forced beneath the lighter continental plate.

#15

What is the term for the phenomenon where the sun's rays reach the Earth's surface at a more direct angle, causing increased heating and temperature variation?

Insolation
Explanation

Insolation is the phenomenon where the sun's rays reach the Earth's surface at a more direct angle, causing increased heating and temperature variation.

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