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| the force attraction that exists between any 2 bodies in the universe that is proportional to the product of their mass |
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| a center seeking force that tends to make rotating bodies move toward the center of rotation |
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| the magnitude of centripetal force required to keep all particles of Earth haing identical mass moving in identical circular paths required bu the movements of the Earth-Moon system |
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| the center of mass of a system |
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| the point on the celestial sphere directly over the observer |
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| the point on the celestial sphere directly beneath the observer |
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| a bulge in the water towards the moon |
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| the angular distance of the sun/moon above or below Earth's equator |
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| the plane of the center of the Earth-Moon system as it orbits the sun |
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| the point on the orbit of an Earth satellite (moon) that is nearest Earth |
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| the point on the orbit of an Earth satellite (moon) that is farthest from Earth |
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| a tidal condition of extremely large tidal range that occurs when spring tide coincides with perigee |
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| a nodal "no tidal point in the ocean/sea around which the crest of the tide wave rotates during one tidal period |
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| a line connecting points where high tide occurs simultaneously |
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| a tidal pattern exhibiting one high tide and one low tide during a tidal day |
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| a tidal pattern exhibiting 2 high and low tides per tidal day |
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| a tidal pattern exhibiting 2 high/low tides per tidal with with a marked diurnal inequality |
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| a steep fronted wave that moves upriver when the ride rises in the coastal ocean |
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| a tidal current observed in the open ocean that makes one complete rotation during a tidal period |
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| a tidal current that occurs at the margins of landmasses. water flows in and out for approx. equal periods of time |
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| a tidal current associated with increasing height of tide, generally moving towards the shore |
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| the flow of water seaward during a decrease in height in the tide |
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