Across
- 2. to be upset
- 5. foot covering
- 6. opposite of close
- 7. longest river in the world
- 10. artist who painted Mona Lisa
- 11. Au
- 13. largest ocean on earth
- 14. study of celestial bodies
- 16. famous playwright of "Romeo and Juliet"
- 18. humongous
- 20. the red planet
Down
- 1. scientist known for the theory of relativity
- 3. study of ancient civilization
- 4. reduce in value
- 8. capital of France
- 9. currency of India
- 12. process of turning gas into liquid
- 15. land of the rising sun
- 17. move to the next level
- 19. smallest prime number