Across
- 4. 1,1,2,3,5,8,...
- 9. idea that earth orbits sun
- 10. the metal made from copper and tin
- 11. mix of water, soil, and clay
- 14. the study and treatment of tooth problems
- 16. used to measure an object's mass
- 17. used to repair damaged faces
- 18. connecting the body with mind or god
- 19. led to increased trade oppurtunities
- 20. a tool for measuring length
Down
- 1. modern digits 1-9
- 2. a fabric worn by ancient Indians
- 3. used to divert sewage away from freshwater
- 5. the concept of atoms
- 6. a strategy game originally containing four players
- 7. made from magnetite
- 8. allowed Indians to build dams and spillways
- 12. used to treat cataracts in eyes
- 13. used to compare two balances
- 15. the treatment of diseases with herbs