Across
- 2. element with 39 protons
- 5. 4th state of matter
- 9. amount of waves in time
- 10. SI unit for force
- 14. magnet powered by electricity
- 15. particles packed together
- 16. SI unit for energy
Down
- 1. waves bending at an opening
- 3. height of a wave
- 4. force pushing downwards
- 6. element with 4 protons
- 7. element with 54 protons
- 8. acceleration in a certain direction
- 11. length of waves
- 12. curved lens
- 13. no electricity comes through