The type of wave that travels faster through solids than gases is sound waves.

Here's why:

* Sound waves are mechanical waves: This means they require a medium (like air, water, or solids) to travel.

* Density and Elasticity: Sound waves travel faster in denser and more elastic materials. Solids are denser and more elastic than gases.

* Particle Interaction: In solids, particles are tightly packed and interact strongly. This allows sound vibrations to travel faster and more efficiently. In gases, particles are spread out and interact less frequently, slowing down the wave's propagation.

Let me know if you'd like more details on any of these points!