| A | B |
|---|
| reflection | The bouncing back of a wave after it strikes a barrier or an object. |
| refraction | The bending of a wave as it passes at an angle from one medium to another. |
| diffraction | The bending of waves around a barrier or through an opening. |
| interference | A wave interaction that occurs when two or more waves overlap. |
| electromagnetic wave | A wave that can travel through space or matter and consists of changing electric and magnetic fields. |
| radiation | The transfer of energy through matter or space as electromagnetic waves, such a visible light and infrared waves. |
| electromagnetic spectrum | The entire range of electromagnetic waves. |
| law of reflection | The 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 of matter. |
| scattering | The release of light energy by particles of matter that have absorbed energy. |
| transmission | The passing of light through matter. |
| transparent | The term describing matter through which light is easily transmitted. |
| translucent | The term describing matter that transmits light but also scatters the light as it passes through the matter. |
| opaque | The tern describing matter that does not transmit any light. |
| pigment | A material that gives a substance its color by absorbing some colors of light and reflecting others. |
| concave | A mirror or lens whose surface that curves inward like the inside of a bowl. |
| convex | A mirror or lens whose surface that curves outward and is thicker at the center than the edges. |
| photon | A particle of light. |
| mirror | An object that reflects light. |
| lens | A transparent object that focuses light. |
| ray | A straight line used to represent the path of light. |
