explain why there two highs and two low tides in a 24 hr

Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
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Briefly, explain why there two highs and two low tides in a 24 hr period.

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Coastal locations receive two high tides and two low tides every 24 hours and 52 minutes because the Earth rotates through two tidal bulges every lunar day. The moon revolves around the Earth in the same direction as the Earth rotates on its axis, which causes this to happen.
Midnight tide cycle (upper right). If a region receives two high tides and two low tides of almost equal size each lunar day, it has a semidiurnal tidal cycle. These tidal cycles are common along North America's eastern coast. cycle of mixed semidiurnal tides (lower middle).

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