| A | B |
|---|
| secondary color | a color that is produced when two primary colors blend together |
| resistor | a material through which electricity has difficulty flowing |
| frequency | a measure of how many wave crests or troughs pass a given point in one unit of time |
| temperature | a measurement of how hot or cold something is |
| lens | a piece of transparent material with at least one curved surface |
| prism | a triangular piece of glass or plastic that bends light |
| thermal expansion | an increase in volume that is caused by an increase in temperature |
| convex mirror | curves outward; produces an image that is right-side-up and much smaller than the object |
| reflection | how a wave bounces off an object and changes its direction of travel |
| opaque | matter that does not allow light to pass through it |
| translucent | matter through which some light passes through and some is blocked or bounces in new directions |
| series circuit | only one path where current electricity can flow (flashlight) |
| Doppler effect | the change in a sound's pitch if its source or recipient is in motion |
| current electricity | the flow of an electric charge through a circuit |
| electromagnetic spectrum | the full range of wavelengths, arranged from long waves with the lowest amount of energy to short waves the highest amount of energy |
| amplitude | the height of a wave from its trough or crest to its midpoint |
| radiation | the transfer of energy by electromagnetic waves |
| convection | the transfer of energy by the flow of a liquid or a gas |
| pigment | tiny solid particles of primary colors, which can be mixed to produce all other colors |
