Question

The wave that propagates as an oscillation of matter, and therefore transfers energy through a medium is

• A. Mechanical wave
• B. Ultrasonic wave
• C. Infrared wave
• D. None

Answer 1

The correct option is A Mechanical wave

A mechanical wave is a wave that propagates as an oscillation of matter, and therefore transfers energy through a medium. While waves can move over long distances, the movement of the medium of transmission or the medium is limited. Therefore, oscillating material does not move far from its initial equilibrium position. No material is transported as a result of mechanical waves. Mechanical waves transport energy only. This energy propagates in the same direction as the wave.
Sound is a mechanical wave that results from the back and forth vibration of the particles of the medium through which the sound wave is moving. If a sound wave is moving from left to right through air, then particles of air will be displaced both rightward and leftward as the energy of the sound wave passes through it. The motion of the particles is parallel to the direction of the energy transport. This is what characterizes sound waves in air as longitudinal waves.