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23 Cards in this Set
- Front
- Back
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to move rapidly back and forth |
vibrate |
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What is the movement of sound? |
Sound Waves |
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What is the "Voice Box" |
Larynx |
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What part of the throat produces sound? |
Vocal Cord |
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What Three parts make up your ear? |
Outer Ear |
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What is the outer ear called? |
Auricle |
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What tube in the outer ear guides sound waves to the middle of the ear? |
Auditory Canal |
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A Thin Membrane that separates the outer ear from the inner ear. |
Ear Drum |
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What are the three small bones behind the eardrum in the middle ear? |
Hammer |
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A organ in the inner ear that is filled with liquid. |
Cochlea |
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The nerve that carries the message of sound to the brain. |
Auditory Nerve |
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What is the only animal that has auricles? |
Some Mammals |
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A number of sound waves a vibrating object produces each second. |
Frequency |
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The highness or lowness of a sound |
Pitch |
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How many times must an object vibrate per second for your ears to hear it? |
Faster than 20 times and under 20,000 |
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How man times must an object vibrate before you can't hear it? |
Faster than 20,000 times per seconds |
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What is the Absorbing of unwanted sounds called? |
Sound Proofing |
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What is a reflected sound that can be heard called? |
Echo |
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A high frequency sound that cannot be heard by the human ear. |
ultrasonic |
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What animals use ultrasonic waves? |
Bats, Dolphins |
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an ultrasonic device for sound navigation and ranging |
sonar |
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a picture created by electrical impuleses |
sonargram |
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What ways do people use Ultrasonic waves to produce echoes. |
Ultrasounds |
