Vocabulary
This is the bending of waves around an obstacle. The wave changes direction. Ocean and light waves can experience this.
Interference, diffraction, reflection, refraction
diffraction
_______________ is when waves bounce off a surface, but ____________________ occurs when waves move at different speeds through media. They appear to bend.
a). refraction, reflection c). reflection, refraction
b). diffraction, interference
c). reflection, refraction
Vocal sounds originate here
1. sinus passage 2. tongue/teeth 3. larynx
3. larynx
_______________ is how high or low an audible tone sounds to the ear.
timbre, pitch, volume
pitch
The ______________ ear blocks sounds from behind. Sound enters here.
auditory canal, tympanic membrane, outer ear.
outer ear
Noise cancelling headphones use this. The headphones produce an inverted matching wave to cancel the sound.
1. standing wave, 2. doppler effect, 3. destructive interference 4. constructive interference
3. destructive interference
When the disruption occurs _________________ to the direction of wave movement, the wave is called a
____________________ wave, such as a sound wave.
1). perpendicular, transverse 2).parallel, longitudinal
3). compression, frequency
2).parallel, longitudinal
________________ stretch across the upper portion of the larynx. They relax and tighten.
lips, diaphragm, vocal cords
vocal cords
___________________ are sound waves of very low frequency.
ultrasonic, infrasonic, echolocation
infrasonic
Here sound vibrations are transferred to the liquid of the cochlea. They travel through thousands of hair cells.
inner ear, middle ear, outer ear
inner ear
This is a type of wave in which the disruption moves perpendicular the direction of the wave travel, like light waves or the waves on a guitar string.
compression wave, rarefactions, transverse wave, longitudinal wave
transverse wave
The ___________ ear has the cochlea and auditory nerve, the _________________ ear has the auditory canal and tympanic membrane, and the ___________ear has the hammer, anvil, stirrup and Eustachian tube.
Inner, middle, outer
inner, outer, middle
This is a large muscle that forms on your chest cavity. It determines the power of your voice.
diaphragm, esophagus, trachea
diaphragm
___________________waves have frequencies above the range of human hearing.
sonography, ultrasonic/ultrasound, amplification
ultrasonic/ultrasound
What are the three bones in the middle ear? The eardrum is also here.
pick three:
wishbone, trombone, hammer, anvil, stirrup,
hammer, anvil, stirrup,
________________ waves push the particles in the material closer together, creating areas of high density.
1. compression 2. seismic 3. rarefaction
compression
These two things are in the back of your throat. Sound produced by the vocal cords resonates here.
1. lips and teeth
2. throat and sinus passages
3. larynx and tongue
2. throat and sinus passages
___________________ is a device for detecting submerged objects by using sound.
sonar, sonography, seismograph,
sonar
___________________ this connects the middle ear with the throat. It helps equalize the air pressure on both sides of the eardrum.
the stirrup, semicircular canals, Eustachian tube, esophagus
Eustachian tube
The restoring force then causes regions of lower density called ____________________.
frequencies, reflections, rarefactions, standing waves
rarefactions.
____________________ a simple kind of amplifier known as an acoustic horn.
stereo speaker, sonar, megaphone, telephone
megaphone