Question

sound can travel through molecules other than air.
true
false

Explanation:

Sound is a mechanical wave that requires a medium (composed of molecules) to travel. It can travel through solids (e.g., a wall, where sound travels via the molecules of the solid), liquids (e.g., water, with water molecules as the medium), and gases other than air (e.g., helium). Since there are molecules in these other media (solids, liquids, other gases) and sound needs molecules to propagate (by vibrating them), it can travel through molecules other than air. So the statement is true.

Answer:

True