| A | B |
|---|
| amplitude | The greatest distance that particles in a medium move from their normal position when a wave passes |
| period | The time required for one full wavelength to pass a certain point |
| frequency | The number of vibrations that occur in a 1-second interval |
| reflection | The bouncing back of a wave as it meets a surface or boundary |
| diffractions | The bending of a wave as it passes an edige or opening |
| rarefaction | The space between particles in a longitudinal wave |
| interference | Occurs when when two or more waves exist in the same place at the same time |
| destructive interference | Waves combine so that the resulting wave is smaller than the largest of the original waves |
| constructive interference | Waves combine so that the resulting wave is bigger than the largest of the original waves |
| standing wave | A wave form caused by interference that appears not to move along the medium and that shows nodes and antinodes |
