sound:)
A disturbance that moves energy from place to place is called a
Wave
A sound wave that bounces back toward its source and is heard again is called
an echo
The loudness or softness of a sound is its
volume
We hear most sounds through
air
Sound waves move most slowly through ______
gases
__________ is a vibration that can be heard
sound
________ is how high or how low a sound is
Pitch
The quality of sound that distinguishes it from other sounds is called
timbre
__________ uses echos to look for things underwater
sonar
True or false: musical instruments that are played at same pitch and volume still sound different because of their timbre
true
The part of a sound wave where some particles of matter are pushed together is called a
compression
The intensity of a sound is measured in
decibels
The science of sound is called
acoustics
_________________Uses echos to look inside a person's body
ultrasound
True/False: A sound wave carries particles of matter with it
false
______________ changes sound waves into electrical pictures seen on a graph
oscilloscope
Objects that vibrate have a __________ pitch
high
smooth, hard surfaces usually __________ sound
reflect
Rough, fuzzy surfaces usually ___________ sound
absorb
True/False: most sound waves gradually get louder as their energy is used up
false
Sound waves are _______________ waves that travel through matter
mechanical
The __________________ of a sound wave is the distance from one compression to the next
wavelength
A harsh, unwanted, or unexpected sound is often called a _______________
noise
The _________________ of a sound wave is the number of waves that pass a point in one second
frequency
True/False: Most of the sounds that we hear are a blend of several waves
true