unequal heating
Surface ocean currents are caused by winds. As wind blows across the surface, the wind pulls the water and causes waves.
Randomism .
Surface currents
Convection is the process that causes warm air to rise and cold air to sink. As such, the winds caused by this process are called convection currents.
It is from differing temperatures of air above it that causes currents to flow in the water.
The gravitation pull on the earth.
Surface currents are created by air currents, earth's rotation, and positions of the continents.
The sun is major source of energy that power surface currents because the sun causes wind to blow and winds cause surface currents to form
A surface current is a current caused by wind direction
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The gravitation pull on the earth.