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  9. Q94

OPSC OCS 2023 · Question 94 of 97

Tidal waves are caused by which of the following gravitational interactions?

Geography

  1. ASun's gravitational impact on the Moon
  2. BEarth's gravitational impact on the Moon
  3. CMoon's gravitational impact on the EarthCorrect
  4. DEarth's gravitational impact on the Sun

Answer: C. Moon's gravitational impact on the Earth

Explanation

Given that the gravitational effect of the Moon on the Earth is the strongest due to the shorter distance, the primary cause of tidal waves in the sea is the gravitational effect of the Moon on the Earth.

Source: OPSC OCS Prelims 2023 GS Paper-I; answers per Apti Plus unofficial key

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