| lowest part of transverse wave | trough |
| the SI unit for frequency | Hertz |
| any interference in which waves combine so that the resulting wave is smaller than the largest of the original waves | destructive interference |
| the distance between any two successive identical parts of a wave | wavelength |
| highest point of a transverse wave | crest |
| an observed change in the frequency of a wave when the source or observer is moving | Doppler effect |
| a disturbance that transmits energy through a medium or space | wave |
| the matter through which a wave travels | medium |
| any interference in which waves combine so that the resulting wave is bigger than the original waves | constructive interference |
| the greatedt distance that particles in a medium move from there normal position when a wave passes | amplitude |
| the number of vibrations that occur in a 1 second interval | frequency |
| water and light waves are... | transverse waves |
| traffic and sound waves are... | longitudinal waves |
| a single disturbance going through a medium | pulse |
| places of no movement | nodes |
| places of maximum displacement from the baseline | antinodes |
| musical instruments are.... | standing waves |
| abbreviation for Hertz | Hz |
| degree of normal | 90 |
| abbreviation for decibel | dB |
| threshold of pain | 120 dB |
| seven parts of the electromagnetic spectrum (lowest wavelength to highest) | gamma rays, x-rays, UV rays, visible light, infrared radiation, microwaves, radio waves |
| as frequency increases, wavelength... | decreases |