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8.14: Tides

Difficulty Level: At Grade Created by: CK-12
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Vocabulary

high tide

The highest water levels during a day caused by the gravitational pull of the Moon.

low tide

The lowest water levels during a day when high tide is one-quarter of the way around Earth’s sphere.

neap tide

The smallest tidal range in a lunar month occurring at the first- and third-quarter moons when the Sun and Moon are at 90o relative to each other, relative to Earth.

spring tide

A large tidal range that occurs when the Moon, Sun, and Earth area aligned; this happens at full and new moon phases.

tidal range

The difference between the high and low tide in a day.

tide

The regular rising and falling of Earth’s surface waters twice a tidal day as a result of the Moon’s and Sun’s gravitational attraction.

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Difficulty Level:
At Grade

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Date Created:
Feb 24, 2012
Last Modified:
Sep 28, 2016
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