Learn about sound waves and the principles of acoustics.
The type of wave that sound travels as
The region of a sound wave where particles are compressed
The region of a sound wave where particles are spread apart
The unit used to measure the frequency of sound waves
The effect of frequency on the pitch of a sound
The type of wave sound does not travel as
The speed of sound in dry air at 20°C
The unit used to measure the sound intensity
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The type of wave that sound travels as
Longitudinal Wave
The region of a sound wave where particles are compressed
Compression
The region of a sound wave where particles are spread apart
Rarefaction
The unit used to measure the frequency of sound waves
Hertz (Hz)
The effect of frequency on the pitch of a sound
Higher frequency results in a higher pitch
The type of wave sound does not travel as
Transverse Wave
The speed of sound in dry air at 20°C
343.2 m/s
The unit used to measure the sound intensity
Decibel (dB)
The change in frequency or wavelength of a wave in relation to an observer
Doppler Effect
The reflection of sound arriving at the listener some time after the direct sound
Echo
The change in direction of a wave passing from one medium to another
Refraction
The phenomenon of two or more overlapping sound waves leading to a new wave pattern
Interference
The phenomenon where a vibrating system drives another system to oscillate with greater amplitude
Resonance
The human hearing range
20 Hz to 20,000 Hz
The science dealing with the production, control, transmission, reception, and effects of sound
Acoustics
The effect of temperature on sound speed
Higher temperature results in higher speed of sound
The process where sound energy is converted into heat
Sound Absorption
The technique used to reduce the transmission of sound from one place to another
Soundproofing
The harmonics of a sound that are higher than the fundamental frequency
Overtones
Sound waves with frequency above the upper limit of the human hearing range
Ultrasound
Applications of sound waves in transferring information
Telecommunication
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