Sound Vocabulary Crossword

The quick back and forth movement of matter.
The material that sound travels through, can be liquid, solid, or gas.
No matter at all.
Lowness or highness of a sound.
Moving waves that vibrate up and down.
Determines on volume; Height of waves.
Number of times per second some thin goes back and forth to vibrate.
Measurement of loudness of a sound.
Determining the distance of an object using echos.
When sound waves bounce off a hard flat surface and bounces back to our ear.
Using echolocation in water to determine the depth.
Sound building up when object reaches the speed of sound.
How fast sound travels.
Upper part of a longitudinal wave.
Bottom part of longitudinal waves.
Length of wave from crest to crest.
Particles spreading during compression waves.
When there is a disturbance of molecules in the air by vibrations.
Intensity of loudness of a sound.