Tides

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by khelzer409
Last updated 6 years ago

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Discipline:
Science
Subject:
Earth Sciences
Grade:
8

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Tides

About Tides

Tides are periodic rises and falls of large bodies of water. Tides are caused by the gravitational interaction between the Earth and the Moon. The gravitational attraction of the moon causes the oceans to bulge out in the direction of the moon. Another bulge occurs on the opposite side, since the Earth is also being pulled toward the moon (and away from the water on the far side). Since the earth is rotating while this is happening, two tides occur each day.

Neap and Spring tides!

When the sun and moon are aligned, there are exceptionally strong gravitational forces, causing very high and very low tides which are called spring tides, though they have nothing to do with the season. When the sun and moon are not aligned, the gravitational forces cancel each other out, and the tides are not as dramatically high and low. These are called neap tides.

Video!

Tides

Waning Cresent

Waning Gibbous

Waxing Cresent

Waxing Gibbous


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