| A | B | 
|---|
| wave | A disturbance that transmits energy through matter or space. | 
| medium | a substance through which a wave can travel. | 
| transverse wave | A wave in which the particles of the wave's medium vibrate perpendicular to the direction the wave is traveling. | 
| longitudinal wave | A wave in which the particles of the medium vibrate back and forth along the path that the wave travels. | 
| amplitude | The maximum distance a wave vibrates from its rest position. | 
| wavelength | The distance between one point on a wave and the corresponding point on an adjacent wave in a series of waves. | 
| frequency | The number of waves produced in a given amount of time. | 
| wave speed | The speed at which a wave travels. | 
| reflection | The bouncing back of a wave after it strikes a barrier or an object. | 
| refraction | The bending of a wave as it passes at an angle from one medium to another. | 
| diffraction | The bending of waves around a barrier or through an opening. | 
| interference | A wave interaction that occurs when two or more waves overlap. | 
| standing wave | A wave that forms a stationary pattern in which portions of the wave do not move and other portions move with a large amplitude. | 
| resonance | What occurs when an object vibrating at or near a resonant frequency of a second object causes the second object to vibrate. |