moon phases and tides

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Across
  1. 3. the alternate rising and falling of the sea, usually twice in each lunar day at a particular place, due to the attraction of the moon and sun.
  2. 5. of, on, or relating to the earth.
  3. 7. of, found in, or produced by the sea.
Down
  1. 1. a tide just after a new or full moon, when there is the greatest difference between high and low water.
  2. 2. of or denoting the area of a seashore which is covered at high tide and uncovered at low tide.
  3. 4. the force that attracts a body toward the center of the earth, or toward any other physical body having mass.
  4. 6. a tide just after the first or third quarters of the moon when there is least difference between high and low water.