Which of the following statements are TRUE of sound waves? Identify all that apply. A sound wave is a mechanical wave. A sound wave is a means of transporting energy without transporting matter. Sound can travel through a vacuum. 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 transverse wave. To hear the sound of a tuning fork, the tines of the fork must move air from the fork to one's ear. Most (but not all) sound waves are created by a vibrating object of some type. 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.
Properties of sound
A sound wave is a mechanical wave (or mechanical vibration) that transit through media such as gas (air), liquid (water), and solid (wood).
Quality Of Sound
A sound or a sound wave is defined as the energy produced due to the vibrations of particles in a medium. When any medium produces a disturbance or vibrations, it causes a movement in the air particles which produces sound waves. Molecules in the air vibrate about a certain average position and create compressions and rarefactions. This is called pitch which is defined as the frequency of sound. The frequency is defined as the number of oscillations in pressure per second.
Categories of Sound Wave
People perceive sound in different ways, like a medico student takes sound as vibration produced by objects reaching the human eardrum. A physicist perceives sound as vibration produced by an object, which produces disturbances in nearby air molecules that travel further. Both of them describe it as vibration generated by an object, the difference is one talks about how it is received and other deals with how it travels and propagates across various mediums.
Which of the following statements are TRUE of sound waves? Identify all that apply.
- A sound wave is a mechanical wave.
- A sound wave is a means of transporting energy without transporting matter.
- Sound can travel through a vacuum.
- 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 transverse wave.
- To hear the sound of a tuning fork, the tines of the fork must move air from the fork to one's ear.
- Most (but not all) sound waves are created by a vibrating object of some type.
- 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.
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