The Cause of Tide Occurrences

by Sean Thomas Webmaster
Many people would be absolutely curious about what causes tides, especially at the position of the beach constantly hit by incoming waves. Generally the attacking of the tides onto the beach surfaces is caused due to the lower and higher height of the sea at different time intervals. And why does the surface of the sea would rise and fall, it is affected by the gravitational attraction between the Sun, Moon, Earth as well as the centrifugal force. The relatively moving of the Moon around the Earth and the trajectory motion of Earth around the Sun will trigger the centrifugal forces.

When the tide-generating forces balance precisely on average, the local mismatch on the Earth's surface will initiate a horizontal force. The force will be exerted onto the surface points closest and furthest from the sun, called the "solar" or from the moon, named as "lunar". Therefore, during the times when the Moon and Sun are in parallel line with the Earth, the oceans' levels will be pulled then raised. The Moon is much closer to the Earth although it is way smaller than the Sun. The gravity effect will decline hastily according to the widening of the distance between the two. As such, the Moon's gravitational pull has greater influence on the tides compared to the Sun. In fact, the Moon's effect is literally double of the Sun's.

The total mass of the oceans does not change in a whole; hence what causes tides to increase at one point simply indicates that at other regions, they are declining. It is illogical to say the water levels at all areas will soar simultaneously as the added water level must have originated from somewhere. Areas with low water levels will be mass-depleted. It is sensible to think that if the water in your area advances then in other parts of the Earth, it is receding.

It is convinced that the tide-generating forces are the strongest in regions close or at the equator, as illustrated by most references involving the tides, Sun, Moon and Earth. This depicts that these areas do not experience much contrary between the high and low tide, as compared to other places in the world. This is explained by the bulging of the seas' surface, and subsequently the Moon's orbital plane. During this point of time, the plane is not aligned with the Earth's plane. In fact, a precise analysis revealed that the orbital plane of the Moon makes a 23-degree angle relative to the Earth's. The water levels at the equator will seesaw only within a fairly small range as the orbiting Moon will constantly pull the water.


About Sean Thomas Junior   Webmaster

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Joined APSense since, May 5th, 2012, From US, United States.

Created on May 5th 2012 05:28. Viewed 276 times.


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