Monday
A sound wave that bounces back toward its source and his heard again is
What is an echo
The fancy word for the science of sound
What is acoustics
This is the part of a sound wave where the motion of each vibration pushes together some of the partices of matter
What is a compression
This is the type of echolocation that locates items underwater
What is sonar
As their energy gets used up, this gradually will happen to a sound wave
What is they get quieter
The intensity of sound is measured in
What are decibles
A disturbance that moves energy from place to place is called this
What is a wave
Most sounds we hear travel through this
What is air
The echos of high-frequency sound waves to "see" inside a human body is this
What is sonar
Objects that vibrate quickly have this kind of pitch
What is a high pitch
Smooth, hard surfaces usually do this to sound
What is reflect
A vibration that we can hear is this
What is a sound
This is also known as the loudness or softness of the sound
What is volume
Most of the sounds that we hear are a blend of this
What are several waves
Rough, fuzzy surfaces usually do this to sound
What is absorb
A harsh, unwanted, or surprising sound is often called this
What is a noise
The pitch of a sound is related to this
What is frequency
The quality of a sound that distinguishes it from other sounds is
What is timbre
Both singing and speaking are caused by vibrations of the vocal chords inside of this
What is the larynx of voice box
Sound waves that travel through matter are described as this
What are mechanical waves
What is their timbre
The number of waves that pass a point in one second is the what of a sound wave
What is the frequency
This is the machine that changes sound waves into electrical pictures seen on a graph
What is an oscilloscope
Sound waves travel in this direction away from the source of the sound
What is all diresctions
When moving through this, sound is moving at its slowest
What are gases