Sound waves require a material medium such as air or water and cannot travel through a vacuum.

Is it true that sound waves require a material medium such as air or water and cannot travel through a vacuum?

Yes. A reference article on sound states that sound travels as a mechanical wave through a medium and explicitly cannot propagate through a vacuum because no medium supports the disturbance. Several other educational sources describe sound as mechanical energy requiring a medium such as air or water, though they do not address the vacuum case directly.

Verdict: SUPPORTED · 5 sources for, 1 against · Last checked 3 Oct 2026

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Dumas, H. M., Oliveira, C. F. A. d., & Simeão, C. P. (2019). Determining the Speed of Sound as a Function of Temperature Using Arduino. eric.ed.gov. https://doi.org/10.1119/1.5088475

Lauter, R. (2023). On the Propagation of Sound Waves in a Vacuum. doi.org. https://doi.org/10.21203/rs.3.rs-2573367/v1

Sound. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Sound

Bob, S. (2006). Just How Does Sound Wave?. eric.ed.gov. https://eric.ed.gov/?id=EJ932270

III, D. W. F. (2007). Making Sound Connections. eric.ed.gov. https://eric.ed.gov/?id=EJ774195

Acoustics/Sound Speed. (n.d.). en.wikibooks.org. https://en.wikibooks.org/wiki/Acoustics/Sound_Speed