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Definitions
The Ear
Vocabulary
Anything
Bold Terms
100
the highness or lowness of a sound
Pitch
100
the outer ear does this with sound
collects
100
a reflected sound wave
echo
100
the characteristic of a wave that is measured in hertz is its ___________
frequency
200
less dense area of a compressional wave
rarefraction
200
when you use a thicker guitar string the sound is __________
Lower
200
human perception of the energy a wave carries
loudness
200
an instrument that produces sound by vibration of a reed is in a group called __________
wind
200
the bending of a wave around a barrier
diffraction
300
most dense area of a compressional wave
compression
300
this vibrates when hit by sound and passes teh sound on to three bones in the ear
eardrum
300
system of echolocation used to map the bottom of the ocean
sonar
300
when a trombone player lengthens the column of air in the trombone, the sound's __________ ____________
pitch decreases
300
a wave in which the particle travel in the same direction
compressional wave
400
method of navigating & hunting using echo
echolocation
400
this amplifies recieved soundwaves in the ear
inner ear
400
the change in frequency of a sound due to motion of the source
Doppler effect
400
__________ is different from noise because it forms a regular pattern of pitches and rhythms.
music
400
the frequency at which an object vibrates due to its material, size, or shape
natural frequency
500
343 m/s in air at 20 degrees Celcius
the speed of sound
500
this is lined with hair-tipped cells that generate information about recieved sounds in the ear
cochlea
500
when an object starts to vibrate at its natural frequency by absorbing energy from another object vibrating at teh same frequency
resonance
500
hearing damage can begin with sounds of about _____ decibels
85
500
the unit to measure the energy or intensity of a sound
decibel