Ultimate crossword pussle!!!

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Across
  1. 1. you can see 25 percent of the moon.
  2. 5. the leaves are changing color and are falling to the ground.
  3. 6. the force that attracts a body toward the center of the earth.
  4. 7. gas giants
  5. 10. you can see 50 percent of the moon.
  6. 11. the scientific study of matter.
  7. 12. the oldest of this is at the bottom and the youngest is on top.
  8. 13. the earth is in between the sun and the moon.
  9. 14. when a planet is spinning on its axis.
  10. 15. usually the coldest season of the year.
Down
  1. 2. also known as terrestrial planets
  2. 3. the moon is blocking our vision from the sun.
  3. 4. the motion of a planet around the sun along its orbit.
  4. 5. preserved remains of organisms from past geological ages.
  5. 8. the remains that were found from an extinct species.
  6. 9. the principle of geology about the sequence of rock layers.