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S8P4.A
| Term | Definition |
|---|---|
| wave | A periodic disturbance in a solid,liquid or gas as energy is transmitted through. |
| medium | A physical environment in which phenomena occur. |
| mechanical wave | A wave that needs a medium in which to travel. |
| transverse wave | a wave in which the particles of the medium vibrate |
| longitudinal wave | a wave in which the particles of the medium vibrate parallel to the direction of wave motion |
| compression | part of the longitudinal wave where the particles bunch up close together |
| rarefaction | part of the longitudinal wave in which the particles expand and move apart |
| electromagnetic wave | a wave that consists of electric and magnetic fields that vibrate at right angles to each other |