Class Times Crossword

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Across
  1. 1. a book of maps
  2. 5. a giant cloud of gas and dust in space
  3. 8. a letter from an ancient alphabet used in magic and inscriptions
  4. 9. a sound that bounces back from surfaces
  5. 11. tiny sea creatures that build reefs
  6. 13. the path one object takes around another in space
  7. 14. a green gemstone often used in royal jewelry
  8. 17. a black gemstone often used in jewelry
  9. 18. a massive, slow-moving river of ice
  10. 19. a triangular monument built in ancient Egypt
  11. 20. a feather used as a writing tool in the past
Down
  1. 2. a mythical creature with a lion’s body and human head
  2. 3. a bird of prey known for its speed
  3. 4. colorful lights in the sky near the poles
  4. 6. a mountain that can erupt with lava
  5. 7. a type of snake (also a programming language)
  6. 10. a stringed musical instrument often played by angels in art
  7. 12. molten rock that flows from a volcano
  8. 15. a ball of ice and rock that leaves a glowing tail in space
  9. 16. the fourth state of matter, besides solid, liquid, gas