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S8P4.a
Identify the characteristics of an electromagnet and mechanical waves
| Term | Definition |
|---|---|
| wave | a periodic disturbance in a solid, liquid, or gas as energy is transmitted through a medium |
| medium | a physical environment in which a phenomena occurs |
| mechanical wave | a wave that needs a medium in which to travel |
| transverse wave | a wave in which the particles of the medium move parallel to the direction of the wave motion |
| longitudinal wave | a wave in which the particles of the medium vibrate perpendicular to the direction of the wave motion |
| compression | part of the longitudinal wave where the particles bunch up bunch up close together |
| refraction | part of 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 |