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You are reading an older version of this FlexBook® textbook: CK-12 Earth Science Concepts For High School Go to the latest version.

8.14: Tides

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

high tide

high tide

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

low tide

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

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

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

tidal range

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

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

Concept Nodes:

Grades:

Date Created:

Feb 24, 2012

Last Modified:

Jun 25, 2015
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