Question:

Which of the following best describes how a sound wave is produced?

A. occurs when there is a flow in energy

B. occurs when there is a vibration caused by a disturbance

C. occurs when there is a disturbance in the flow of energy

D. occurs when there is a disturbance that moves away from a source and carries energy with it

Answer:

B. occurs when there is a vibration caused by a disturbance