Question

A sound wave is a longitudinal wave. Which of the following describes a sound wave?

A.) particles move parallel to the direction of the wave.
B.) particles move perpendicularly the direction the waves travel.
C.) particles move the opposite direction of the motion and direction of the wave.
D.) there are no particles in a sound wave so, therefore, no movement.

Answer 1

Answer:

Particles move parallel to the direction the waves travel.

Explanation:-

Sound waves in air (and any fluid medium) are longitudinal waves because particles of the medium through which the sound is transported vibrate parallel to the direction that the sound wave moves. ... These back and forth vibrations are imparted to adjacent neighbors by particle-to-particle interaction.

Answer 2

For a sound wave traveling through air, the vibrations of the particles are best described as longitudinal. Longitudinal waves are waves in which the motion of the individual particles of the medium is in a direction that is parallel to the direction of energy transport.