| A | B |
|---|
| Pitch | A measure of how high or low a sound is perceived depending on the frequency of the sound wave. |
| Intensity | The amount of energy in each wave. |
| Reflection | Occurs when a wave strikes an object and bounces off. |
| Medium | A material through which a wave travels. |
| Electromagnetic wave | A wave that consists of oscillating electric and magnetic fields which radiate outwards at the speed of light. |
| Wavelength | The distance from any point on a wave to an identical point on the next wave. |
| Frequency | The number of wave crests that pass a point during a given amount of time. |
| Refraction | The bending of a wave caused by changing the speed of the wave. |
| Crest | The highest point of a wave. |
| Sonar | A system that uses acoustics signals to determine the location of an object or to communicate. |
| Period | The time it takes a complete cycle or wave oscillation to occur. |
| Interference | The combination of two or more waves of the same frequency that results in a single wave. |
| Electromagnetic radiation | Transverse waves that transfer energy by radiation that vary in length. |
| Transverse wave | A wave in which the particles of the medium move perpendicular to the direction of the wave motion. |
| Wave speed | The rate at which a rhythmic disturbance in a medium travels through it. |
| Constructive interference | The combining of two or more waves that produces a greater intensity than that of the individual waves. |
| Wave | A rhythmic disturbance that carries energy through a medium. |
| Longitudinal wave | A wave in which the particles of the medium travel parallel to the direction of the wave motion. |
| Trough | The lowest point of a wave. |
| Amplitude | The distance from rest position of a medium to either the crest or trough. |
| Doppler Shift | An observed change in the frequency of a wave when the source of the wave or the observer is moving. |
| Electromagnetic spectrum | All of the frequencies or wavelengths of electromagnetic radiation. |
| Ultrasound | Any sound wave with a frequency higher than 20,000 Hz. |
| Destructive interference | The combining of two or more waves that produces an intensity lesser than that of the individual waves. |
