Sound Vocabulary

Compression

• Region of a longitudinal wave where the particles in the medium are closest together.

• Region of a longitudinal wave where the particles are farthest apart.

• A type of wave that travels through a vacuum.

• A measure of how much a wave is stretched.

Doppler Effect

• Change of pitch when a sound source is moving in relation to an observer.

• Increase in volume when a sound source is approaching the observer.

• Decrease in volume when a sound source is moving away from the observer.

• No change in sound when the source is stationary.

Longitudinal Wave

• The particles in the material that carries the wave move back and forth along the direction that the wave travels.

• The particles in the material that carries the wave move perpendicular to the direction that the wave travels.

• The wave travels in a circular motion, causing the particles to move in a spiral.

• The particles in the material that carries the wave remain stationary while the wave passes through.

Medium

• Material in which a wave travels.

• A type of wave that travels through a vacuum.

• A measurement of wave frequency.

• A device used to generate waves.

Echolocation

• A process used by animals to locate objects using reflected sounds.

• A method of communication among birds.

• A technique for navigating underwater using light.

• A way for animals to find food by smell.

Echo

• A type of sound wave

• Reflected sound wave.

• A musical note

• A sound that is absorbed

Rarefaction

• Region of a longitudinal wave where the particles are farthest apart.

• A type of wave that travels through a vacuum.

• The point in a wave where the particles are closest together.

• A measure of the frequency of a wave.

Wavelength

• Distance between a point on one wave and the same point on the next wave.

• The height of a wave from its crest to its trough.

• The speed at which a wave travels through a medium.

• The frequency of a wave multiplied by its amplitude.

Sound Wave

• A transverse wave that can travel through a vacuum.

• A longitudinal wave that can only travel through matter.

• A type of electromagnetic wave that travels at the speed of light.

• A wave that can only travel through solids.

Pitch

• Perception of how high or low a sound seems.

• The loudness of a sound.

• The duration of a sound.

• The quality of a sound.