Grade 9 Astronomy

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Across
  1. 2. Another name for a terrestrial planet is ______
  2. 5. The study of space
  3. 11. There are lots of these between Mars and Jupiter
  4. 12. The plant with the smallest orbital period
  5. 15. Another name for a shooting star
  6. 16. This motion causes the seasons
  7. 17. Jupiter, Saturn and Uranus are made of ______
Down
  1. 1. When the moon is between the Earth and Sun
  2. 3. A large hole-like shape on the Moon
  3. 4. The name for a 3/4 moon
  4. 6. The planet that moves the slowest
  5. 7. The name of our galaxy is the ______ Way
  6. 8. The Earth's __________ causes day/night
  7. 9. This term means the moon is growing
  8. 10. The _____ moon is at the start of the moon cycle
  9. 13. The orbital period of this planet is 365 days
  10. 14. The distance between the Sun and Earth
  11. 18. The largest star in our solar system