Which of the following statements is true? Sound waves create areas of high and low pressure. Areas of high pressure are called compressions. Areas of low pressure are called rarefactions. All of the above.

Sound waves are mechanical waves consisting of the oscillations of the particles in a medium. They are longitudinal waves, which means that the vibrations of the particles occur in a direction parallel to the direction of propagation of the wave.

This type of wave consists of alternating regions where:

- the density of the particles is higher: these regions are called compressions, and they correspond to high pressure regions

- the density of the particles is lower: these regions are called rarefactions, and they correspond to low pressure regions

snehapa snehapa · Answer 2 · 2019-10-16T11:32:40+02:00

Option (D) is correct. All of the above statements are true.

Further Explanation:

The sound waves produced by a sound source are the longitudinal waves. These waves are called as the longitudinal waves because the vibration of the particles in a longitudinal wave occurs parallel to the direction of propagation of the wave.

As the sound wave oscillates during their propagation, they create the areas of high pressure and low pressure. The areas of high pressure, where the waves are very close to each other and the density of the wave particles is comparatively higher than the other parts are termed as the compressions.

The areas of low pressure where the various waves are far away from each other and the density of the wave particles is comparatively lower than the other parts is termed as the rarefaction.

Therefore, the above explanations state that all of the above statements are correct.

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Answer Details:

Grade: Middle School

Subject: Physics

Chapter: Sound Waves

Keywords:

Sound waves, longitudinal waves, high and low pressure, compressions, rarefactions, parallel to the direction, propagation, vibration.