Wednesday, June 9, 2010

Cycle2 Week 10


Question: What causes high & low tides?

Answer: The moon is what creates the tides. But, they aren't both necessarily influenced by the moon in the same manner. Because high tides are caused by the moon's gravitational force, it pulls on the water in the oceans so that there are bulges in the ocean on both sides of the planet. The moon pulls water toward it, and this causes the high tides. Low tides are caused by the sides of the earth that aren't being pulled by the moons gravitational pull.

Picture URL:http://ircamera.as.arizona.edu/NatSci102/NatSci102/movies/tides2.gif

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