All particles vibrate in some manner.
After you stroke a tuning fork, all the particles move back and forth. If you play a piano, particles of the wire move back and forth.
the particles in a surface water move back- and- forth only.
the particles in a surface water move back- and- forth only.
solids
solid
solids
solid
any solid, liquid or gas.
A longitudinal wave.
The position of the particles in a solid do not change. However they are said to move back and forth or vibrate in their same position.
Compression waves.
Transverse wave longitudinal wave-hint back and forth