TERMS
PROPERTIES
TRUE/FALSE
CHARACTERISTICS
GRAB BAG
100
What is a machine that changes sound waves into electrical pictures seen on a graph called?
Oscilloscope
100
The pitch of a sound is related to its __________.
Frequency
100
Timbre is how high or how low a sound is.
False; Pitch
100
The quality of a sound that distinguishes it from other sounds is called__________.
Timbre
100
A harsh, unwanted, or surprising sound is often called __________.
Noise
200
What is a type of echolocation that locates items underwater called?
Sonar
200
The part of a sound wave where the motion of each vibration pushes together some of the particles of matter is called__________.
Compression
200
Musical instruments that are played at the same pitch and volume still sound different because of their timbre.
True
200
The loudness or softness of a sound is called its__________.
Volume
200
True/False - Most of the sounds that we hear are a blend of several waves.
True
300
What is the science of sound called?
Acoustics
300
A vibration that can be heard is called__________.
Sound
300
The intensity of a sound is measured in hertz.
False; decibels
300
Objects that vibrate quickly have a high__________.
Pitch
300
Sound waves that travel through matter are described as __________waves.
Mechanical
400
What is the echoes of high-frequency sound waves to "see" inside a human body called?
Ultrasound
400
Sound moves through matter in __________. They travel in all directions away from the source of the sound.
Waves
400
A sound wave that bounces back toward its source and is heard again is called a wavelength.
False; echo
400
Sound moves the slowest through __________.
Gases
400
Rough, fuzzy surfaces usually__________sound; while smooth, hard surfaces usually__________sound.
absorb; reflect
500
What is a disturbance that moves energy from place to place called?
Wave
500
Most sounds we hear travel through__________.
Air
500
Most sound waves gradually get louder as their energy is used up.
False; Fades
500
The number of waves that pass a point in one second is the __________of a sound wave.
Frequency
500
Both singing and speaking are caused by vibrations of the vocal cords inside the__________.
Larynx/voice box
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