| A | B |
|---|
| wavelength | measured from crest to crest |
| frequency | the number of waves in a second |
| Reflection | "bouncing off" |
| Refraction | wave changing speed as it changes medium |
| Diffraction | Happens when a wave goes through a gap |
| Interference | When waves get mixed together |
| Transverse | wave moves at right angles to disturbance |
| Longitudinal | wave moves in same direction as the disturbance |
| amplitude | How much energy a wave carries |
| Constructive Interference | Two waves combine to make a wave with a larger amplitude |
| energy | What waves transfer. |
| Destructive Interference | Two waves combine with each other producing a smaller amplitude |
| crest | high point of a transverse wave |
| trough | low point of a transverse wave |
| compression | Part of longitudinal wave where medium particles are close together |
| rarefaction | part of longitudinal wave where particles are spread out |
| surface waves | combination of transverse and longitudinal wave |
| vibrate | Waves are generated when a source of energy causes matter to ____________. |
| speed | measured in metres per sec. |
