transverse wave
a wave with a direction of propagation that is perpendicular to its direction of oscillation
longitudinal wave
a wave with a direction of propagation that is parallel to its direction of oscillation
supersonic speed
any speed that is faster than the speed of sound in the substance of interest
sonic boom
the sound produced as a result of an object traveling at Mach 1 or above
pitch
an indication of how high or low a sound is which is primarily determined by the frequency of the sound wave
v:
(331.5 + 0.6 x T)
are sound waves transverse waves or longitudinal waves
longitudinal waves
crests
the highest point on a wave
troughs
the lowest point on wave
frequency
how many waves hit a certain point each second
amplitude
the height of the wave
pitch is determined by what?
frequency
frequency determines what?
wavelength
Amplitude determines what?
loudness
volume is determined by what?
amplitude
sound is a...
longitudinal
sound waves with low pitch...
have low frequency
sound wave with high pitch...
have high frequency
infrasonic waves
with frequencies below 20 Hz
sonic waves
have frequencies between 20 and 20,000 Hz
ultrasonic waves
have frequencies higher than 20,000 Hz
frequency formula
f=velocity/wavelength
distance formula
d=speed*time
Mach 1
the speed of sound
Mach 2
twice the speed of sound
Mach 3
three times the speed of sound
30 decibels = _______bels
3
If an amplifier increases the sound from 2 bels to 5 bels, this results in how many times larger intensity?
1,000 (three zeros)