OCS 1005 : Test 3 Tides
15 Mar 2019
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Document Summary
The rhythmic rise and fall of sea level. Very long and regular shallow water waves. Caused by the gravitational attraction of the sun, moon and earth. Tidal period the time between high tides. Barycenter a common center of mass or a balance point. Between the moon and the earth it is found beneath the earth"s surface because of the earth"s greater mass. The more mass something has, the more gravitational force it exerts. The greatest force is at the zenith- the point on the earth that is closest to the moon. The weaker force is at nadir the point furthest from the moon and opposite zenith. Centripetal force center-seeking force that tethers the earth and the moon to one another. Resultant forces the mathematical difference between the gravitational and centripetal forces. High tides are 12 hours and 25 minutes apart.
