Across
- 2. The change in direction of a wave passing from one medium to another caused by its change in speed.
- 6. A wave in which the medium vibrates in a direction parallel to the direction in which the wave travels.
- 8. For a wave or vibration, the maximum displacement on either side of the equilibrium (midpoint) position.
- 9. The number of complete vibrations or oscillations per unit of time.
- 10. The return of light, heat, sound, or energy from a surface.
Down
- 1. A sound that has a frequency too high to be heard by the normal human ear.
- 3. The distance between successive crests, troughs, or identical parts of a wave.
- 4. Region of higher density and pressure in the medium through which a longitudinal wave travels.
- 5. A phenomenon in which the frequency of forced vibrations on an object matches the object’s natural frequency.
- 7. Region of lower density and pressure in the medium through which a longitudinal wave travels.