APPhysics1LearningGuide
Unit9:Sound
EssentialQuestions:
LearningTargets:
AP.PHYS.11.9.1 Determine the speed of sound in air at one atmosphere of pressure at different temperatures AP.PHYS.11.9.2 Distinguish between the following terms: pitch, frequency, wavelength, sound intensity, and loudness AP.PHYS.11.9.3 Determine intensity level on decibels of a sound if the intensity of the sound is given in W/m2 AP.PHYS.11.9.4 Explain how a standing wave can be produced in a wind instrument open at both ends or closed at one end; calculate the frequencies produced by different harmonics of pipes of given length AP.PHYS.11.9.5 Determine the beat frequency produced by two tuning forks of different frequency AP.PHYS.11.9.6 Use the Doppler Effect to determine the frequency or perceived frequency given the velocities of the source and/or observer Howdoesthespeedofsoundchange
asittravelsthroughdifferent
mediums?
Doestemperatureaffectthespeedof
sound?
Whatdoyounoticeasafiretruck
passesbyyouwithitssirenon?
KeyVocabulary:
Sound
Pitch
IntensityLevel
OpenPipe
ClosedPipe
SoundQuality
Beats
BeatFrequency
DopplerEffect
ShockWaves/SonicBoom