February 8, 2012

Tide

Summary
Tide is cause by the movement of the moon around the earth and also gravity. There is two main type-Spring Tide and Neap Tide. Spring tide is when the sun, earth and moon are in the same line, the water level are highest and lowest, the phase of moon is new moon and full moon phase. Neap tide is when the sun, earth and moon are in an angel, the water level is equal, the phase of moon is first quarter and last quarter.

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