| A | B |
|---|
| wave | A disturbance that transfers energy from one place to another. |
| medium | An intervening substance through which a force acts. |
| mechanical wave | A wave that requires a medium through which to travel. |
| vibration | A repeating back-and-forth or up-and-down motion. |
| transverse wave | A wave that moves the medium in a direction perpindicular to the direction in which the wave travels. |
| crest | The highest part of a transverse wave. |
| trough | The lowest part of a transverse wave. |
| longitudinal wave | A wave that moves the medium parralel to the direction in which the wave travels. |
| compression | The part of a longitudinal wave where the particles of the medium are close together. |
| rarefaction | The part of a longitudinal wave where the particles of the medium are far apart. |
| surface wave | A wave that occurs at the surface between two mediums. |
| amplitude | The maximum distance the particles move away from their rest positions as a wave goes through the medium. |
| wavelength | The distance between the crests of one wave and the crest of the next wave. |
| frequency | The number of complete waves that travels through a given place in a certain amount of time. |
| Hertz | Unit of measurement for frequency. |
| reflection | The bouncing of a wave when it hits a surface through which it cannot pass. |
| angle of incident | The angle between an energy wave and an imaginary line drawn perpindicular to the surface of the barrier or new mdium. |
| angle of reflection | The angle between a reflected wave and an imaginary line drawn perpindicular to the surface of the barrier or new medium. |
| refraction | The bending of waves as they enter a different medium. |
| diffraction | The bending of waves around the edge of a barrier. |
| interferance | - |
| constructive interferance | - |
| destructive interferance | - |
| standing wave | - |
| node | - |
| antinode | - |
| resonance | - |
| seismic wave | An energy wave caused by the movements of the earth's tectonic plates. |
| primary wave | - |
| secondary wave | - |
| tsunami | An ocean wave caused by seismic waves. |
| seismograph | A device that measures seismic waves. |
