The two primary causes of ocean currents are?

Assessment: JAMB UTME - Geography - 2007 Subject: Geography

Question 1 Report

The two primary causes of ocean currents are?
Answer Details
Ocean currents are primarily caused by two factors: differential salinity and temperature variation. The difference in salinity and temperature between two areas of water creates a difference in density, which then drives the movement of water. Warm water is less dense than cold water, and water with a higher salt concentration is denser than water with a lower salt concentration. These differences in density drive the movement of water from one area to another, creating ocean currents.
Read lesson note on Hydrosphere* (WAEC)
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