USCG Exam PracticeTides and currents — predictions and corrections
Tides are caused primarily by which of the following?
- A. Wind-driven surface currents acting on the ocean gyres
- ✓ The gravitational interaction of the moon, sun, and earthCorrect
- C. The horizontal flow of water associated with tidal currents
- D. Pressure differences between high and low pressure weather systems
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