Characteristics High Tide Science Project Idea
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Written by Dee
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Saturday, 06 October 2007 |
Science project idea on the characteristics of high tide.
Characteristics of High Tide
Why high tide is a little later every day. From our discussion, what would you conclude should be the time between two high tides? If, then, high tide occurs at 12 o'clock on one day, at what time should there be high tide on the following day? Is this actually what occurs? Some of you have gone to the ocean bathing beaches. On your visits there did you find that high tide always occurred at the same time of day? Observation will show you that high tide is about fifty minutes later every day. Our problem then is to understand the reason for this seeming discrepancy.
In our discussion of the cause of tides we considered that. The earth rotated once in twenty-four hours. If the moon kept in the same relative position with reference to the earth, how often would a certain point on the earth's surface be directly opposite the moon? Since, however, it takes twenty-four hours and fifty minutes for any spot which is directly opposite the moon to be again opposite the moon, what will be your conclusion as to the movement of the moon? Can you determine whether the moon moves around the earth in the same direction as the earth rotates or in the opposite direction? Astronomers, scientists who study the movements of the heavenly bodies, have shown that the conclusion we have reached that the moon revolves around the earth in the same direction in which the earth rotates is true. They tell us that the moon revolves completely around the earth in twenty eight days. We can now consider the problem which arose in discussing gravitation.
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