Unit 6 Vocab

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Across
  1. 3. imaginary line about which an object rotates
  2. 5. occurs at the first and third (last) quarter Moon phases; the Sun is at a right angle to the Moon
  3. 6. an imaginary line in which a three-dimensional object rotates around; the Earth spins on its axis
Down
  1. 1. occurs at the full and new Moon phases; Earth, Moon, and Sun are in alignment pulling the water in the same direction
  2. 2. force of attraction between all masses in the universe, especially the attraction of the Earth's mass for bodies near its surface
  3. 4. the rising and falling of the oceans due to the gravitational attraction of the Moon and Sun; usually occurs twice each day