| A | B |
|---|
| transparent | Allowing light to pass through |
| translucent | Allowing some light to pass through |
| opaque | Allowing no light to pass through |
| reflection | When light bounces off an object |
| refraction | When light is bent as it passes through an object |
| convex lens | Makes images larger |
| concave lens | Makes images smaller |
| prism | A transparent object that separates white light into the colors of the rainbow |
| spectrum | The group of colors including red, orange, yellow, green, blue, indigo, & violet (the rainbow) |
| sound | A form of energy that is produced by vibrations and can be heard |
| vibration | Moving back and forth quickly |
| pitch | The measure of how high or low a sound is |
