Across
- 4. waves cancel each other out
- 7. propagates as both electrical and magnetic waves
- 8. mediums vibration is parallel to the direction of the wave
- 11. number of waves
- 13. distance the wave travels
- 14. change in direction of a wave passing from one medium to another
- 15. range of all types of em radiation
Down
- 1. distance between identical points
- 2. production of an image
- 3. combine to create a larger wave
- 5. maximum displacement of points on a wave
- 6. vibrates at right angles to the direction of its propagation
- 9. spreading out of waves
- 10. substance that transfers energy
- 12. produced by a moving source with respect to an observer