| A | B |
|---|
| wavelength | the distance between two waves |
| crest | the height of a wave |
| trough | the depth of a wave |
| frequency | the amount of waves in one second |
| amplitude | the maximum movement of the wave from its undisturbed position |
| hertz (hz) | the unit of measurement for frequency |
| velocity | how fast the waves move |
| Metres per second (m/s) | the unit of measurement for velocity |
| Prism | a triangular glass block used to bend light |
| Spectrum | light which has been bent to form a range of colours |
| Refraction | Bending light |
| Radio waves | long waves used by GSMs and TVs |
| X Rays | short waves used in hospital to take pictures of our bones |
| Infrared waves | the longest waves. Used to give us heat. |
| Microwaves | The shortest waves. Used for television, RADAR and cooking! |
| Gamma rays | Very short and very dangerous waves. |
| Ultraviolet | Waves that change the colour of our skin! |
