Remind them that in compressional waves particles of material move back and forth parallel to the direction in which the wave itself moves. As a compressional wave passes, the material first ...

These waves are higher frequency than surface waves. P waves are also known as compressional waves, because they push and pull. Particles subjected to a P wave move in the same direction that the wave ...

They observed that localized wave packets emerged in the fluid, due to reaction, diffusion and flow-induced compression. These waves appeared to be influenced by transverse flow disturbances ...