describes types of surfaces that a sound wave can travel through

Sound waves can travel through various types of surfaces, including solids, liquids, and gases.

In solids, such as walls or floors, sound waves are transmitted by the vibrations of particles. The particles in the solid are closely packed, enabling sound waves to travel efficiently through them.

In liquids, like water or oil, sound waves rely on the movement of molecules. Even though the particles in liquids are not as tightly packed as in solids, they can still transmit sound waves quite well.

In gases, like air, sound waves travel through the collisions of molecules. Despite the fact that gas particles are more spread out compared to solids and liquids, they can still carry sound waves, albeit less efficiently.

Regardless of the surface, sound waves require a medium to travel through. This means that in empty space, where there is no medium, sound cannot propagate. Therefore, sound waves need something to travel through, whether it is a solid, liquid, or gas.