waves

3. The rate at which a vibration occurs that constitutes a wave, either in a material (as in sound waves), or in an electromagnetic field (as in radio waves and light)
4. The act of compressing or the state of being compressed
7. A wave that moves the medium in a direction perpendicular to the direction in which the wave travels.
9. A disturbance that travels through space and matter transferring energy from one place to another
11. The substance or material that carries a wave
13. The lowest point of a wave
15. An instance of vibrating

1. The combination of two or more electromagnetic waveforms to form a resultant wave in which the displacement is either reinforced or canceled
2. A wave that propagates through a medium due to the oscillation of matter
5. A point along a standing wave where the wave has minimal amplitude
6. The reduction of an item's density, the opposite of compression
8. The distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave.
10. The maximum extent of a vibration or oscillation, measured from the position of equilibrium
12. The high point of a wave
14. Wave A wave in which the medium moves in the same direction as the wave