. Human hearing depends on both the _________ and the intensity of sound waves. 3. The intensity of sound is inversely proportional to the square of the distance from the source. 4. It is the softest sounds that can be heard by the average human ear. 5. It is determined by relating the intensity of a sound wave to the intensity of the threshold of hearing. 6. A condition that exists when the frequency of a force applied to a system matches the natural frequency of vibration of the system.
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.
2. Human hearing depends on both the _________ and the intensity of sound waves.
3. The intensity of sound is inversely proportional to the square of the distance from the source.
4. It is the softest sounds that can be heard by the average human ear.
5. It is determined by relating the intensity of a sound wave to the intensity of the threshold of hearing.
6. A condition that exists when the frequency of a force applied to a system matches the natural frequency of vibration of the system.
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