key terms 4 - Tide-generating forces The magnitude of the...

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Tide-generating forces – The magnitude of the centripetal force required to keep all particles of Earth having identical mass moving in identical circular paths required by the movements of the Earth- Moon system is identical. This required force is provided by the gravitational attraction between the particle and the Moon. This gravitational force is identical to the required centripetal forces only at the center of Earth. For ocean tides, the horizontal component of the small force that results from the difference between the required and provided for forces is the tide-generating force on that individual particle. These forces are such that they tend to push the ocean water into bulges toward the tide-generating body on one side of Earth and away from the tide-generating body on the opposite side of Earth. Lunar day – The time interval between two successive transits of the Moon over a meridian, approximately 24 hours and 50 minutes of solar time. Also called a tidal day. Tidal range – The difference between high tide and low tide water levels over any designated time interval, usually one lunar day. Spring tide – Tide of maximum range occurring about every two weeks when the Moon is in either new or full moon phase. Neap tide – Tides of minimal range occurring about every two weeks when the Moon is in either first or third quarter moon phase. Tide chart -- Comes in sets, each diagram of the set covering a single hour
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This note was uploaded on 04/01/2008 for the course GEOG 30C taught by Professor Trist during the Fall '06 term at University of California, Berkeley.

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key terms 4 - Tide-generating forces The magnitude of the...

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