Question

Every day, we hear different kinds of sound. Identify the sounds around you as loud and soft and soothing and jarring. Complete the table with the examples of these sounds.

LOUD/JARRING SOUNDS	SOOTHING/SOFT SOUNDS

Answer 1

Hint: We know that sound is a mechanical wave that results from the back and forth vibration of the particles of the medium through which the sound wave is moving. The motion of the particles is parallel (and anti-parallel) to the direction of the energy transport. This is what characterizes sound waves in air as longitudinal waves. Noise is another word for sound. It usually means it is not wanted. Noise is perceived by our ears. They can be damaged by noise. Noise is created through any object, which produces vibration unnecessarily.

Complete answer:
We know that sound waves fall into three categories: longitudinal waves, mechanical waves, and pressure waves.
Noise is an unwanted sound considered unpleasant, loud or disruptive to hearing. From a physics standpoint, noise is indistinguishable from sound, as both are vibrations through a medium, such as air or water. Acoustic noise is any sound in the acoustic domain, either deliberate (e.g., music or speech) or unintended.

LOUD/JARRING SOUNDS	SOOTHING/SOFT SOUNDS
TRAFFIC	MUSIC
LOUD MUSIC	TELEVISION PROGRAMS
SPEAKERS AT SOCIAL GATHERING	INSTRUMENTALS
SHOUT OF HUMAN BEINGS	VOICE OF HUMAN BEINGS

Note:
When a drum is hit, the air particles next to the drum skin vibrate and collide with other particles, and this vibration is then transmitted through the air. This is known as wave compression, which allows sound to travel quickly through the air. Sound is a type of energy made by vibrations. When any object vibrates, it causes movement in the air particles. This movement, called sound waves, keeps going until the particles run out of energy. The speed of sound depends on the medium in which it is transported. Sound travels fastest through solids, slower through liquids and slowest through gases.