SOLUTION GRADED A+
◉ compression. Answer: where energy pushes the waves together, high
pressure
◉ rarefaction. Answer: energy pulls apart, low pressure
◉ sound graph. Answer: amplitude vs time
◉ simplest wave form. Answer: sine wave
◉ frequency. Answer: how often a sound wave repeats in one second,
measured in Hz
◉ hertz. Answer: measure of frequency
cycles/seconds
◉ range of human hearing. Answer: 20-20,000 Hz
, ◉ amplitude. Answer: energy of a sound wave
measured in dB
◉ the farther you go. Answer: the less the amplitude is
◉ threshold of human hearing. Answer: 0 dB
◉ threshold of pain. Answer: 140 dB SPL
◉ threshold of feeling. Answer: 120 dB SPL
◉ velocity. Answer: rate of sound through a medium
◉ velocity of sound through air at 70 degrees f. Answer: 1130 ft/sec
or
770 m/hr
◉ velocity and density and temo go hand in hand?. Answer: less dense
medium = faster velocity
hotter temperature = faster velocity
◉ wavelength. Answer: length of a wave