The tidal cycle runs every ________.

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Grades 6, 7 and 8 - Science - Middle School - The Moon and Tides — practice the complete quiz, review flashcards, or try a random question.

What are tides? Tides are the periodic swelling, or rising, and falling of bodies of water on the Earth’s surface.  Climate factors can affect the tides, as well as earthquakes.  However, besides climate, the gravitational attraction that exists between the Earth and the Moon also greatly affect the rise and fall of water levels. As the Earth is rotating while the Moon orbits it, there are two high tides and two low tides each day. TYPES OF TIDES Spring Tides: The strongest gravitational forces occur when the Moon and the Sun are aligned. The gravitational pull causes the water levels to be... Show more

The tidal cycle runs every ________.