Across
- 3. the number of waves
- 4. the distance a wave travels
- 8. light ray changes medium
- 9. apparent change in the frequency of a wave
- 11. medium moves perpendicular to the direction of the wave
- 13. two waves that are the opposite added together
- 14. medium moves parallel to the direction of the wave
- 15. spreading of waves
Down
- 1. the range of all types of electromagnetic radiation
- 2. carries a wave
- 5. the height of a wave
- 6. two waves that are the same added together
- 7. a wave of electric and magnetic fields
- 10. distance from one wave to another
- 12. an object does not emit its own light