| A | B |
|---|
| wave | a disturbance that transmits energy through matter or space |
| electromagnetic wave | a wave that does not require a medium |
| wavelength | the distance between one point on a wave and the corresponding point on an adjacent wave |
| frequency | the number of waves produced in a given amount of time |
| electromagnetic spectrum | the entire range of electromagnetic waves |
| reflection | the bouncing back of a wave after it strikes a barrier or object |
| law of reflection | law that states that the angle of incidence is equal to the angle of reflection |
| absorption | the transfer of energy carried by light waves to particles in matter |
| scattering | the release of light energy particles of matter that have absorbed extra energy |
| transmission | the passing of light through matter |
| pigment | a material that gives a substance its color by absorbing some colors of light and reflecting others |
| refraction | the bending of a wave as it passes at an angle from one medium to another |
| lens | a curved, tranparent object that refracts light |
| 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 |
