Physics

6. A sound wave with a frequency higher than about 20kHz, the upper limit of human hearing.
7. The spacial separation between the peaks of a wave.
9. A wave interaction produced when two waves arrive at the same place at the same time. Destructive and constructive.
11. The loud boom produced by a shockwave in the air caused by the flight of an object such as a jet traveling at supersonic speed.

1. When waves encounter corners or obstructions, bending and spreading out as a result.
2. When a wave passes through the boundary separating two media, changing velocity and direction in the process.
3. A scale for measuring the loudness of sounds.
4. disturbance in space and time that carries energy from one place to another
5. A wave interaction produced when the dimensions of a medium correspond to an integral multiple of half the wavelength, reflections propagating greater amplitude
8. When a wave bounces off a reflecting surface, obeying the law of reflection in the process.
10. The length of time required for an oscillating system to complete one full cycle of its oscillation