Sound waves are unable to travel through which of the following?

Explanation

Sound is a mechanical wave that requires a medium, such as a solid, liquid, or gas, to travel, since it moves by vibrating particles. In a vacuum, such as outer space, there are no particles to carry the vibrations, so sound cannot travel there. This is why astronauts must communicate using radio waves rather than spoken sound. Explore more Everyday Science MCQs on mcqstutor to keep practicing.