| A | B |
|---|
| Amplitude | Maximum displacement from rest for an object. |
| Antinode | A place in a standing wave where there is maximum displacement from rest. |
| Compression | An area where the particles are squeezed tightly together. |
| Constructive Interference | When two or more waves combine and make a larger wave. |
| Crest | The highest point on a wave. |
| Decibel | Unit that compares the intensity of different sounds. |
| Destructive Interference | When two or more waves combine and make a smaller wave. |
| Diffraction | Bending of light waves as they move around an obstacle or pass through a narrow opening. |
| Doppler Effect | A change in the frequency of an object due to its motion. |
| Frequency | The number of cycles per second |
| Hertz | Measurement of frequency. |
| Intensity | The rate at which energy flows through a given area. |
| Interference | Occurs when waves overlap or combine together. |
| Longitudinal Wave | Wave vibrations through a material in the same direction it travels. |
| Loudness | A physical response to the intensity of a sound. |
| Mechanical Wave | A disturbance in matter that carries energy from one place to another. |
| Medium | The material the wave travels through, solid, liquid, gas, or vacuum. |
| Node | A place in a standing wave where there is no displacement from rest. |
| Period | Time it takes to complete one cycle |
| Periodic Motion | A motion that repeats itself at regular intervals. |
| Pitch | The frequency of the sound as you perceives it. |
| Rarefaction | An area where the particles are spread out. |
| Reflection | When waves bounce off a substance and cannot go through. |
| Refraction | Bending of a light wave as it enters a new medium. |
| Resonance | Response of a standing wave to another wave of the same frequency. |
| Sonar | A technique to find objects or distance in water. |
| Sound Waves | Longitudinal waves that travel through a medium. |
| Standing Wave | Waves that appear to stay in one place. |
| Surface Wave | A wave that travels through two different surfaces. |
| Transverse Wave | Wave vibrations through a material at a right angle to direction it travels. |
| Trough | The lowest point on a wave. |
| Wavelength | Distance between a point on one wave and the same point on the next cycle of the wave. |
