USCG Exam PracticeTides and currents — predictions and corrections
Tidal currents differ from surface ocean currents in that tidal currents are driven by which force and exhibit which behavior?
- A. Driven by wind; they flow continuously in one direction
- ✓ Driven by tide; they reverse direction with the tideCorrect
- C. Driven by wind; they reverse direction with the tide
- D. Driven by density differences; they flow in major gyres
Why B is correct
Bowditch Ch. 24 §2401 states that tidal currents are driven by tide rather than wind and reverse direction with the tide. Surface ocean currents are driven primarily by wind and form major gyres.
Cited:Bowditch Ch. 24 §2401