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tides (what causes tides? (gravity and tides (moon's gravity effects…
tides
what causes tides?
gravity and tides
tides are caused by interaction of Earth, the moon, and the sun
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moon's gravity effects water on earth which creates bulge of water, called a tidal bulge, on the side facing the moon
in the places of tidal bulge, high tide occurs along the coastlines, in the places between the bulges low tide
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monthly tide cycle
changes in the positions of earth, the moon, and the sun affect the heights of the tides during a month
spring tide is new moon and full moon combined gravitational pill produces the greatest difference between the heights of high and low tide
first and third quarters of moon, sun and moon pull at right angles to each other produces a neap tide
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tide tables
scientist combine knowledge of movements of moon and earth with information about shape of coastline and other local conditions
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upwelling
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brings up tiny ocean organisms, minerals, and other nutrients from deeper layers of the water
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energy from tides
movement of huge amounts of water between high and low tide is a source of potential energy- energy that is stored and can be used