| A | B |
|---|
| Absorb | To take up. For example: A sponge absorbs water, cloth absorbs sound energy. |
| Amplify | To make louder. |
| Beats | The basic rhythm or sound pattern of music. |
| Energy | The ability to do work, to move or change matter. Energy comes in different forms including heat, light, sound, electricity, mechanical, and chemical. |
| Fundamental | The lowest note that can be made by a vibrating object. |
| Gas | One of the three phases of matter. Gases easily change shape and volume. |
| Liquid | One of the three phases of matter. Liquids can change shape easily but they do not change size easily. |
| Overtone | Any part of the mix of sounds made by a vibrating material that gives it its sound; a sound made by a musical instrument that is a higher pitch than the fundamental. |
| Pitch | A property of sound caused by how fast an object is vibrating, usually described by words like high or low. |
| Rhythm | The pattern of beats in a piece of music. |
| Solid | One of the three phases of matter. Solids do not change size or shape easily. |
| Sound | A form of energy caused by the vibration of an object. |
| Sound Chamber | The hollow part of some kinds of musical instruments that makes the instrument loud enough to be heard. |
| Sound Proofing | The use of material to absorb sound energy to make a space quieter. |
| Speed of Sound | How fast sound energy travels through a material at a certain temperature. |
| Tension | How much a material is stretched, one of the variables that can change the pitch of a vibrating object. |
| Timbre | The way a vibrating object sounds, caused by the fundamental and overtones it makes. |
| Thickness | One of the dimensions of an object that affects how fast it will vibrate and the pitch it makes. |
| Vibration | A back and forth movement which produces a sound. |
| Volume | How loud a sound is because of how tall its sound waves are. |
