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Science Chapter 3 Unit F Definitions and Notes
Science Chapter 3 Unit F Definitions and Notes
27
Science
5th Grade
04/12/2013

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Term
overtone
Definition
A fainter, higher tone that harmonizes with the main tone produced by a musical instrument or the human voice.
Term
vibration
Definition
A back and forth movement of matter.
Term
crest
Definition
The highest point of a wave.
Term
rarefaction
Definition
A region in a sound wave where there are fewer particles than normal.
Term
sound
Definition
A form of energy that travels through matter as waves.
Term
trough
Definition
The long narrow hollow between two waves.
Term
compression
Definition
A region in a sound wave where particles have been pushed together.
Term
wavelength
Definition
The distance between one crest of a wave and the next crest.
Term
frequency
Definition
The number of waves (such as light or sound) produced in a unit of time, such as a second.
Term
amplitude
Definition
A measure of the amount of energy in a sound wave.
Term
timbre
Definition
The quality of sound that sets one voice or musical instrument apart from another.
Term
soft
Definition
A ___ sound is represented by a sound wave with a small amplitude.
Term
loud
Definition
A ___ sound is represented by a sound wave with a large amplitude.
Term
wood, air
Definition
Sound travels more easily through ________ than through ________.
Term
musicians
Definition
________ often use words such as mellow, bright, or tinny to describe differences in the timbre of sounds.
Term
Music is pleasant to listen to, while noise is unpleasant.
Definition
What is the difference between music and noise?
Term
frequency, wavelength, amplitude
Definition
What are the 3 main characteristics of a sound?
Term
If there were no air to conduct the sound, no sound would be heard.
Definition
Would you be able to hear if there were no air in the room?
Term
The child's voice is higher pitched.
Definition
What is the difference between a small child's voice and an adults voice?
Term
Children have higher pitched voices than adults because their vocal cords are shorter and thinner than those of adults.
Definition
Why is there a difference between a child and adult voice?
Term
Dogs can hear lower and higher sounds than humans.
Definition
How does the hearing range of dogs compare with that of humans?
Term
The trumpet and the clarinet are closest to that of the human female voice.
Definition
Which instrument's range of frequencies is closest to that of the human voice?
Term
Low pitched sounds have lower frequency and produce fewer sound waves per second than higher-pitched sounds.
Definition
What causes a high sound to differ from a low sound?
Term
hertz
Definition
A unit used to measure wave frequency.
Term
sound synthesizer
Definition
An electronic device that can produce a wide variety of sounds.
Term
pitch
Definition
The highness or lowness of a sound.
Term
octave
Definition
The series of eight notes that makes up a musical scale.
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