USCG Exam PracticeTides and currents — predictions and corrections
Tides are caused primarily by which of the following?
- A. Rotation of the earth on its axis
- ✓ Gravitational interaction of the moon, sun, and earthCorrect
- C. Wind stress acting on the ocean surface
- D. Differences in water density due to temperature
Why B is correct
Bowditch Ch. 9 §901 defines tides as the periodic vertical rise and fall of sea level due to the gravitational interaction of the moon, sun, and earth. Wind drives surface ocean currents, not tides.
Cited:Bowditch Ch. 9 §901