Across
- 4. the magnitude of sound (usually in a specified direction)
- 6. the property of sound that varies with variation in the frequency of vibration
- 8. when light passes sharp edges or goes through narrow slits the rays are deflected and produce fringes of light and dark bands
- 9. a logarithmic unit of sound intensity
- 12. the number of observations in a given statistical category
- 13. issue or emerge in rays or waves
- 14. wave a wave that moves the medium in a direction perpendicular to the direction in which the wave travels
- 17. the change in direction of a propagating wave (light or sound) when passing from one medium to another
Down
- 1. boom an explosive sound caused by the shock wave of an airplane traveling faster than the speed of sound
- 2. wave a wave in which the vibration of the medium is parallel to the direction the wave travels
- 3. the height of a wave's crest
- 5. wave a wave (as a sound wave in a chamber or an electromagnetic wave in a transmission line) in which the ratio of its instantaneous amplitude at one point to that at any other point does not vary with time
- 7. the material through which a wave travels
- 10. the image of something as reflected in a mirror effect (or other reflective material)
- 11. speed the speed at which a wave travels
- 15. quality the result of the blending of several pitches through interference
- 16. a reply that repeats what has just been said