Across
- 6. material in which charges are not free to move
- 8. unit of magnetic field
- 9. number of oscillations per unit time
- 11. the change in pitch due to the relative motion between a source of sound and the person hearing the sound
- 13. the amount of sound energy passing through a given area in a given time
- 15. light of a single color/frequency
- 16. material that allows charges to move freely
- 18. the frequency of the corresponding sound wave
- 19. the geographic pole that the north end of a bar magnet points to
- 20. an electrical device in which a long wire is wound into a succession of closely spaced loops
Down
- 1. represented by the variable A
- 2. 343 m/s
- 3. electromagnetic waves with frequencies above 10^20 Hz
- 4. a filter tha transmits light waves with only one direction of polarization
- 5. the bending of a wave around a barrier or through an opening
- 7. the electromagnetic waves that our eyes can detect
- 10. sounds with a frequency greater than 20,000 Hz
- 12. the sharpness of vision
- 14. charge of an electron
- 17. a particle of light that carries energy but has no mass