Multiple choice

Deep ocean currents help transport water all over Earth. How are they formed?

  1. denser, warm water sinks creating the currents

  2. denser, cold, and/or salty water sinks creating the currents

  3. the wind forces surface currents underwater

  4. marine life create the steady flow of the currents
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Deep ocean currents are driven by thermohaline circulation, which is caused by differences in water density. Denser water, which is colder or saltier, sinks and drives the global conveyor belt.

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