Terms 1
a vibration that can be heard
sound
a rapid back and forth movement
the science of sound
acoustics
Most sound waves we hear travel through
air.
the part of a sound wave where the motion of each vibration pushes together some of the particles of matter
compression
a disturbance that moves energy from place to place
wave
a sound wave that bounces back toward its source and is heard again
echo
sonar
Sound waves move through matter in
waves.
noise.
the loudness or softness of sound
how high or low a sound is
pitch
the echos of high frequency sound waves to "see" inside the human body
ultrasound
Sound waves move the slowest through what form of matter?
gases
What makes musical instruments sound different when they have the same pitch and volume?
timbre
frequency
the number of sound waves that pass a point in one second
frequency
a machine that changes sound waves into electrical pictures seen on a graph
oscilloscope
True or False: A sound wave carries particles of matter with it.
False: the matter vibrates but does not get carried along.
True or False: Most sounds we hear are a blend (mix) of several waves.
True
the intensity of sound is measured in
decibels
the quality of a sound that distinguishes it from other sounds
timbre
How has God designed sound waves so that person is able to hear all the different instruments in a musical piece at the same time?
Fill in the blank: Sound waves that travel through matter are described as ......... waves.
mechanical
Choose the correct answer: Objects that vibrate quickly have a (high/low) pitch.
high