Does anyone know why the tides move in and out twice every day
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Does anyone know why the tides move in and out twice every day

[From: ] [author: ] [Date: 11-05-09] [Hit: ]
there is a main tide pulled by the passing moon and a secondary tide which is pulled by the moon on the other side of the earth which is not as strong.-The movement of the Sun also affects the tides.From Wikipedia: http://en.wikipedia.Tides are the rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moon and the Sun and the rotation of the Earth.Most places in the ocean usually experience two high tides and two low tides each day (semidiurnal tide),......
I know that the moon efects the tide, but why are there two tides per day? The moon only goes around once. Why?

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Hi, there is a main tide pulled by the passing moon and a secondary tide which is pulled by the moon on the other side of the earth which is not as strong.

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The movement of the Sun also affects the tides.

From Wikipedia: http://en.wikipedia.org/wiki/Tide

Tides are the rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moon and the Sun and the rotation of the Earth.

Most places in the ocean usually experience two high tides and two low tides each day (semidiurnal tide), but some locations experience only one high and one low tide each day (diurnal tide). The times and amplitude of the tides at the coast are influenced by the alignment of the Sun and Moon, by the pattern of tides in the deep ocean and by the shape of the coastline and near-shore bathymetry
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