Across
- 4. there are 6 of these
- 7. mass divided by volume
- 9. needs heat
- 10. anything that has mass
- 12. a force moves an object
- 13. on the periodic table
- 16. heat transfer by air
- 18. distance divided by time
- 19. ph less than 7
Down
- 1. heat transfer by contact
- 2. roy g biv
- 3. speed in a direction
- 5. change in pitch
- 6. discovered gravity
- 8. bending of rays
- 9. gives off heat
- 11. ph greater than 7
- 14. a whole spectrum
- 15. transfer through space
- 17. sound can not travel