| A | B |
|---|
| iris | part of eye that lets in light |
| concave lens | light rays spread apart |
| part of electromagnetic spectrum | colored light, ultraviolet waves, X rays |
| no sound | outer space |
| sound wave | longitudinal wave |
| energy formed by vibrating objects | sound wave |
| faster vibration | higher pitch |
| cochlea | filled with liquid that vibrate which causes little hairs to move |
| light and sound waves | both energy |
| refracted light | moves from one medium to another / pencil in glass |
| high pitch | shorter distance to travel /piccolo |
| wind instrument | blow across hole, particles in a column of air to vibrate and produce sound |
| opaque | makes a shadow |
| translucent | stain glass window |
| transparent | clear glass |
| wavelength | distance form one point of wave to another point |
| absorption | light wave is taken in and heat is made |
| reflection | wave bounce off an object |
| compression | particles of sound wave are close together |
| frequency | number of times a wave makes a complete cycle in a second |
