A student was sitting on one end of the football bleachers after school. On the other end, the drum line was practicing a new performance. The musicians play their drums for part of the performance and drum the bleachers for part. The student has not bothered by the playing of the drums, but has bothered by the drumming on the bleachers because he can feel it in the seat. He moves further away, which does make the situation better, but not enough. He then decides to sit on his book bag. Describe the movement of energy from the musicians to the student. In your response, be sure to include: • Why the student can feel vibrations from the bleachers being played but not from the drums. • Why the energy felt by the student decreases as the student moves further from the source. Why sitting on a book bag helped the situation.
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.
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