Weightlessness has negligible effects on sound waves, as the kinetic energy of air particles remains significantly larger than any influence from gravity. In a weightless environment, the fundamental mechanism of sound wave propagation is not altered. While gravity creates a pressure gradient that can affect sound on a larger scale, this is not relevant in weightless conditions. Thus, sound waves behave similarly in both weightless and gravitational environments. Overall, the propagation of sound is primarily determined by the properties of the medium rather than the presence of gravity.
