Question

distinguishing sound waves
which statement correctly describes sound waves?
sound waves are longitudinal waves.
sound waves are transverse waves.
sound waves do not travel through a medium.
sound waves are not considered mechanical waves.

Explanation:

To determine the correct statement about sound waves, we analyze each option:

1. Sound waves are longitudinal waves: In longitudinal waves, particles of the medium vibrate parallel to the direction of wave propagation. Sound waves work this way (compressions and rarefactions), so this is correct.
2. Sound waves are transverse waves: Transverse waves have particle vibration perpendicular to wave direction (e.g., light, water ripples). Sound is not transverse, so this is incorrect.
3. Sound waves do not travel through a medium: Sound requires a medium (solid, liquid, gas) to travel (it can’t in a vacuum), so this is incorrect.
4. Sound waves are not considered mechanical waves: Mechanical waves need a medium, and sound is a mechanical wave, so this is incorrect.

Answer:

A. Sound waves are longitudinal waves