select the correct answer. sound waves are mechanical waves. which statement is true for this type of wave…

select the correct answer. sound waves are mechanical waves. which statement is true for this type of wave? a. sound waves transport their energy through a vacuum. b. particles of the medium are displaced completely from their initial positions, moving along with the wave front. c. particles of the medium move perpendicular to the direction of the energy transport. d. sound waves require a medium in order to transport energy.

select the correct answer. sound waves are mechanical waves. which statement is true for this type of wave? a. sound waves transport their energy through a vacuum. b. particles of the medium are displaced completely from their initial positions, moving along with the wave front. c. particles of the medium move perpendicular to the direction of the energy transport. d. sound waves require a medium in order to transport energy.

Answer

Brief Explanations:

Mechanical waves like sound waves need a medium (solid, liquid, or gas) to travel as they transfer energy by the vibration of particles in the medium. They cannot travel through a vacuum. Particles in a mechanical - wave medium vibrate around their equilibrium positions and do not move along with the wave front completely. In a sound wave (longitudinal wave), particles move parallel to the direction of energy transport.

Answer:

D. Sound waves require a medium in order to transport energy.