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Sound Review Questions
Questions
9
Science
Not Applicable
03/21/2005

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Cards

Term
The pitch of a stringed instrument is affected by ___________.
Definition
length of the string
Term
Describe how sound waves travel.
Definition
Like throwing a rock in water and seeing the small waves.
Term
The brain interprets sound from these.
Definition
Tiny hairs in the inner ear that affect the nerve cells.
Term
Three parts of the ear
Definition
Inner ear, middle ear, outer ear
Term
If the pitch is high, the source is vibrating __________.
Definition
quickly
Term
If the pitch is low, the source is vibrating __________.
Definition
slowly
Term
A sonic boom is caused by __________.
Definition
an object moving faster than the speed of sound.
Term
Why can you see a plane before you hear it?
Definition
The speed of light (which allows you to see the plane) moves faster than the speed of sound.
Term
How is sound measured?
Definition
Decibels (dB)
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