Tides and moon phases

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Across
  1. 2. : the seashore that is covered in high tide, and uncovered in low tide.
  2. 4. : found or made by the sea.
  3. 6. : the pull of an objects force and mass.
  4. 7. : continuum of water rise and fall in oceans and seas.
Down
  1. 1. : is the highest of the high tides, and the moon phases are new moon and full moon
  2. 3. : something related to the earth.
  3. 5. : is the lowest of the low tides, and the moon phases are first and last quarter moon