UOI 3 Vocabulary Puzzle

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Across
  1. 4. a large system of stars, gas, dust, and dark matter bound together by gravity
  2. 5. a moon shape that is more than half illuminated but not quite full
  3. 6. the weather starts to cool and the leaves on deciduous trees change color and fall to the ground
  4. 8. the path that an object takes as it moves around another object in space
  5. 11. the moon's phase when it is decreasing in illumination
  6. 12. a group of stars that form a recognizable pattern or shape
  7. 14. the spinning motion of a planet on its axis
  8. 15. a moon shape that is more than half illuminated but not quite full
  9. 16. a scientist who studies the stars, planets, and other celestial objects
  10. 17. the regular rise and fall of the sea level caused by the gravitational pull of the moon and the sun
Down
  1. 1. a time when the weather begins to warm and new plant life starts to bloom
  2. 2. the moon's phase when it is increasing in illumination
  3. 3. the different appearances of the moon as seen from Earth throughout its orbit
  4. 7. the angle at which a planet's axis is tilted
  5. 9. the orbital motion of a planet around the sun
  6. 10. the recurring phases of the moon
  7. 13. characterized by shorter daylight hours and the presence of snow and ice
  8. 18. the warmest season of the year, characterized by long daylight hours and higher temperatures