Summarize the physical reasons that sound waves travel at different speeds through different medium?

Sound waves travel at different speeds through various media due to differences in density and elasticity. In denser media, such as solids, molecules are packed closely together, allowing sound waves to transmit energy more efficiently. Conversely, in gases, where molecules are more spread out, sound travels slower due to the increased distance between molecules. Additionally, the elasticity of the medium influences how quickly it can return to its original shape after being disturbed, affecting sound propagation speed.