amplifier
They cause the particles around them to be pushed together and then spread apart.
Compression
This question is misguided. It is not the sound waves which are apart, but the particles of the medium. A place where the particles are further apart is called a rarefaction. Where they are crowded together is called a compression.
When molecules of air are pushed together, they form an area of high pressure which is called compression. If the compression is cyclonic, it is called a node.
amplifier
Vibration pushes then pull on the particles of air around it. The area where the air particles are pushed together is called compression.An example is a stereo speaker.
They cause the particles around them to be pushed together and then spread apart.
They will be pushed closer together.
No. When air cools air particles move closer together. When air warms air particles move father away from each other.
particles of cool air are sloser together than particles of warm air
when you push the plunger are the air particles closer together in the syringe or in the bubble
Compression
Solids are metals,plastics and logs.
This question is misguided. It is not the sound waves which are apart, but the particles of the medium. A place where the particles are further apart is called a rarefaction. Where they are crowded together is called a compression.
Vacum
When molecules of air are pushed together, they form an area of high pressure which is called compression. If the compression is cyclonic, it is called a node.