What is defined as a disturbance that transfers energy through a medium?

• A. Sound wave
• B. Compression
• C. Disturbance
• D. Pulsation

Answer: (A)

A sound wave is defined as a disturbance that transfers energy through a medium, such as air, water, or solids. This occurs when vibrations create pressure changes in the medium, which propagate as waves. The characteristics of sound waves, including their frequency, wavelength, and amplitude, determine the perception of sound, including its pitch and volume.

Compression, although related to sound waves, specifically refers to the part of a sound wave where the particles of the medium are pushed together. It does not encompass the entirety of the wave.

Disturbance is a broader term that can refer to any disruption or change in a medium but does not specifically relate to the transfer of energy like sound waves do.

Pulsation may describe specific rhythmic variations in a sound but is not a technical term for the wave itself nor does it explicitly denote the energy transfer aspect inherent in sound waves.

Thus, the definition of a disturbance that transfers energy through a medium aligns perfectly with the characteristics of a sound wave.