| A | B |
|---|
| frequency | The number of vibrations a wave has in a given time. |
| pitch | The perception of the frequency of a sound as being high or low. |
| loudness | The perception of the amplitude of a sound wave. |
| amplitude | The distance that any point on the wave is moved from its resting place; it is equal to one-half of the wave height. |
| transverse wave | Patricles in this wave vibrate at right angles to the direction of the wave. |
| longitudinal wave | The particles of this wave vibrate back & forth along the same direction as the wave. |
| wavelength | The distance between any two adjacent wave crests. |
| wave | A disturbance traveling through matter or space, carring energy from one place to another without transporting matter. |
| refraction | Bending of light. |
| reflection | The bouncing of light waves off a surface. |
| radiant energy | Vibrating electric and magnetic fields. |
| electromagnetic wave | Light is one type of this |
| translucent | Light is so scattered through this that objects cannot be seen clearly |
| transparent | Light can travel through without being scattered. |
| opaque | This substance will not allow light to pass through it. |
| Hertz | Unit used to measure the frequency of a wave. |
