20 terms

Waves and Sounds (Chapter 18)

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Terms in this set (...)

Wave
A rhythmic disturbance that carries energy through matter or space.
Medium
A material (solid, liquid, or gas, or a combination of these) through which a wave travels.
Transverse Wave
A type of wave where the medium moves at right angles to the direction the wave is traveling,
Crest
The highest point of the wave.
Trough
The lowest point of the wave.
Wavelength
The distance between identical points on two adjacent waves; for example, the distance between two crests or two troughs.
Amplitude
In a wave, the distance from the rest position of the medium to either the crest or trough.
Frequency
The number of wave crests that pass a point during one second; expressed in hertz (Hz)
Compressional Wave
A type of wave where matter vibrates in the same direction as the wave travels.
Pitch
The highness or lowness of a sound, which is determined by the frequency of the sound waves.
Intensity
In sound waves, the amount of energy in each wave; the intensity level of a sound is measured in decibels.
Loudness
The human perception of sound intensity.
Ultrasonic Technology
Technology using high-frequency sound waves for many different purposes such as medical diagnoses, sonar, and jewelry cleaning.
Music
Sound created using specific pitches, sound quality, and regular patterns.
Noise
Sound that has no regular pattern or definite pitch.
Resonance
The tendency of an object to vibrate at the same frequency as another vibrating source.
Quality
In sound, the differences among sounds of the same pitch and loudness.
Interference
The ability of two or more waves to combine and form a new wave.
Reverberation
The echoing effect produced by multiple reflections of sound.
Acoustics
The study of sound.