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How many high tides does a place on the coast pass through during one day?
ATwo high tides
BOne high tide
CFour high tides
DSix high tides
Answer & Solution
Correct answer: A. Two high tides
1. Water piles into two bulges, one under the Moon and one on the far side of Earth.
2. Earth's rotation carries a coastal town through both bulges in a day.
3. That gives two high tides and two low tides each day.
_Source: OpenStax Astronomy (CC BY 4.0), Ch 4 "Earth, Moon, and Sky" and Ch 5 "Radiation and Spectra", section 4.6 Ocean Tides and the Moon_
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