question: How frequently do high tides occur?
distractor3: Every 48 hours
distractor1: Every 96 hours
distractor2: Every 24 hours
correct_answer: every 12 hours
support: 9. If the tidal cycle was actually 12 hours then high tides would occur at the same time every day. In reality, high tides occur about every 12 hours and 25 minutes. Can you think of why this would be the case?.