| A | B |
|---|
| visible spectrum | light energy that can be seen and can be broken into colors of light in the rainbow |
| ray | a narrow beam of light that travels in a straight line from a light source |
| transparent | allows light to pass through so that whatever is behind ccan be seen |
| translucent | allows light to pass through but scatters it so that whatever is behind cannot be clearly seen |
| opaque | does not allow light to pass through |
| absorb | to take in |
| reflect | to bounce back |
| transmit | to pass through |
| convex lens | a lens that is thicker in the middle than at the edges |
| concave lens | a lens that is thinner in the middle than at the edges |
| wavelength | the distance from apoint on a wave to the same point on the next wave |
| vibrate | to move quickly back and forth |
| diffraction | the bending of light around a barrier or through an opening |
| refraction | when light hits an object and is bent and goes off in another direction |
