Question

Sound energy ________ travel through vacuum.

Answer 1

1. Sound energy cannot travel in a vacuum.
2. This is because sound waves are mechanical waves that need a medium (such as air and water) to travel.
3. Sound in physics is defined as a vibration that propagates as an audible wave of pressure, through a medium such as a gas, liquid, or solid.
4. Vacuum does not contain any material medium.

Hence, Sound energy can not travel through a vacuum.