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12th Grade Salinity Quizzes , Questions & Answers

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Global Ocean Circulation Quiz: The Salt-Driven Pump Explained

This assessment explores global ocean circulation and the salt-driven pump mechanism. It evaluates understanding of ocean currents, thermohaline circulation, and their impact on climate and ecosystems. Engaging with this content...

Questions: 15 | Attempts: 15 | Last updated: Mar 20, 2026

Sample Question 1
What is thermohaline circulation, and what drives it?

A wind-driven surface current system that moves water horizontally across the ocean

A global ocean circulation pattern driven by differences in water temperature and salinity that affect density

A tidal current system driven by the gravitational pull of the Moon

A circulation system confined to shallow coastal waters driven by river discharge

Sample Question 2
Thermohaline circulation is sometimes called the ocean conveyor belt because it moves water continuously through the deep and surface ocean on a global scale.

True

False

Sample Question 3
Where does the sinking of cold, salty water that initiates deep thermohaline circulation primarily occur?

Along the equator where solar heating is most intense

In subtropical gyres where evaporation is highest

In polar regions such as the North Atlantic and around Antarctica

Along mid-ocean ridges where volcanic heat warms the water

12th Grade Salinity Quizzes , Questions & Answers

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