Class Times Crossword

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