Why do sound waves travel faster in solids than in gases?

• Particle Arrangement: In solids, particles (atoms or molecules) are packed very closely together and are held in fixed positions by strong intermolecular forces. In gases, particles are far apart and move randomly with weak intermolecular forces.
• Energy Transfer: Sound travels by vibrating particles, which then transfer this vibrational energy to adjacent particles.
  • In solids, because particles are so close and strongly linked, vibrations are quickly and efficiently passed from one particle to the next.
  • In gases, the large distances between particles mean that it takes more time for a vibrating particle to collide with and transfer energy to another particle.

Therefore, the denser packing and stronger connections in solids allow sound energy to propagate much more rapidly compared to gases.