Multiple choice

Which of the following factors modify ocean currents?

  1. Rotation of Earth
  2. Air pressure and wind
  3. Ocean water density
  4. Revolution of Earth

  1. 1 and 2

  2. 1, 2 and 3

  3. 1 and 4

  4. 2, 3 and 4
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ocean currents are driven by three primary factors: Earth's rotation creates the Coriolis effect, wind patterns move surface water, and differences in water density (from temperature and salinity variations) cause vertical movement. Earth's revolution around the sun creates seasons but does not directly cause ocean currents. Therefore, only factors 1, 2, and 3 are correct.

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