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The intensity of a sound wave has units of Watts/meter.

Which of the following statements are TRUE of sound intensity and decibel levels? Identify all that apply. Sound as a: || Mechanical Wave || Sound is a Longitudinal Wave || Sound is a Pressure WaveĢ. FALSE - Quite surprisingly to many, most sounds which we are accustomed to hearing are characterized by particle motion with an amplitude on the order of 1 mm or less. FALSE - All sound waves are created by vibrating objects of some sort. This is true of all waves - they transport energy without actually transporting matter. the particles of the medium merely vibrate back and forth about the same location, never really moving from that location to another location. FALSE - It is the disturbance that moves from the tuning fork to one's ear. And that is exactly how particles of the medium move as sound passes through it.į. Longitudinal waves are those in which particles of the medium move in a direction parallel to the energy transport. FALSE - Never! Waves are either longitudinal or transverse. Over time, a given region undergoes oscillations in pressure from a high to a low pressure and finally back to a high pressure.Į. The close proximity of particles produces a high pressure region known as a compression the distancing of particles within a region produces a low pressure region known as a rarefaction. TRUE - As particles move back and forth longitudinally, there are times when they are very close within a given region and other times that they are far apart within that same region. FALSE - Only electromagnetic waves can travel through a vacuum mechanical waves such as sound waves require a particle-interaction to transport their energy. Particles vibrate about a position one particle impinges on its neighboring particle, setting it in vibrational motion about its own equilibrium position.Ĭ. TRUE - Absolutely! Particles do not move from the source to the ear. A sound wave cannot travel through a vacuum. TRUE - A sound wave transports its energy by means of particle interaction.

To be heard, a sound wave must cause a relatively large displacement of air (for instance, at least a cm or more) around an observer's ear.Ī.

Most (but not all) sound waves are created by a vibrating object of some type.

To hear the sound of a tuning fork, the tines of the fork must move air from the fork to one's ear.

A sound wave is a pressure wave they can be thought of as fluctuations in pressure with respect to time.

A sound wave is a means of transporting energy without transporting matter.

Which of the following statements are TRUE of sound waves? Identify all that apply. The Review Session » Sound and Music » Answers Q#1-9 Sound and Music Review

Cyberlink powerdvd 18 produces periodic static through my center speaker