Which of the following is NOT a primary force which influences ocean currents?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. Magnetic fields of the earth.
- Horizontal movements are referred to as currents, while vertical changes are called upwellings or downwellings.
- Currents are cohesive streams of seawater that circulate through the ocean.
- Besides gravity, the most important forces that cause and affect ocean currents are horizontal pressure-gradient forces, Coriolis forces, and frictional forces.