Through which medium do sound waves travel fastest?

Sound waves travel fastest through solids compared to liquids and gases due to the closely packed molecules in solids that allow for quicker transmission of vibrations. In a solid material like a wooden table, the molecules are tightly bonded and can efficiently convey sound waves by providing a rapid transfer of kinetic energy between them.

In contrast, while sound does travel through water and air, the molecules in these mediums are not as closely packed as in a solid. This results in slower propagation speeds. Specifically, sound travels around four times faster in water than in air, but it still does not match the speeds achievable in solids.

Additionally, a foam cup, being a material with air pockets, would further decrease the speed of sound compared to a solid wooden table. Thus, the wooden table exemplifies the superior medium for sound transmission, affirming it as the fastest among the options provided.