The Moon and the Tides

People who live near the coasts are familiar with the periodic rise and fall of the oceans we call the tides.  The tides are caused by the gravitational force of attraction of the moon and the sun.  The highest high tides and lowest low tides are called spring tides.  They occur about twice a month near the full and new moon phases. In these events, the sun, moon, and earth are all aligned.

When the sun and the moon are at right angles at the first quarter and last quarter phases, the changes in tide water level are smaller.  These smaller tides are called the neap tides.

NOTE: Exam is scheduled for Tuesday, November 23, 2010.  You will need to bring the following items to the test:
  • Pencils
  • Calculator
  • Earth Science Reference Tables
Bring all items to the test with you and get 5 extra points! 

Please review the study sheet handed out on Friday and do your best to prepare for the test.  See study topics listed below in the November 13 posting.

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