Which one of the following do not influence the ocean currents?

Heating by solar energy

Wind

Gravitational pull by Sun and Moon

Coriolis force

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Answer is Wrong!

This question was previously asked in

UPSC CDS-2 – 2022

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While all listed factors influence ocean water movement, Gravitational pull by Sun and Moon is primarily responsible for tides, which are periodic movements (tidal currents) rather than the continuous, large-scale circulation patterns typically referred to as “ocean currents” (driven by wind and density differences). In some contexts, tidal currents are discussed separately from major ocean gyres and thermohaline circulation. Assuming the question differentiates between these types of movements or focuses on the main drivers of persistent currents, gravitational pull’s primary role in tides might be considered distinct.

Heating by solar energy drives density differences (thermohaline circulation) and creates wind (surface currents). Wind directly drives surface currents. Coriolis force deflects moving water, shaping current paths. Gravitational pull causes tides, which are a different type of ocean water movement (tidal currents).

Major ocean currents are primarily driven by wind stress on the surface and density variations caused by differences in temperature and salinity (thermohaline circulation). Coriolis force acts to deflect these currents. Gravitational pull of the Sun and Moon generates tidal forces, resulting in the ebb and flow of tidal currents.

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