Sound is a type of energy that travels through the air (or other mediums) as waves. These waves are created by vibrating objects, which cause the surrounding air molecules to move. When these vibrations reach our ears, they are interpreted by our brain as different sounds, such as music, speech, or noise. The study of sound encompasses various fields, including physics and music. Sound can be measured in terms of frequency, which determines its pitch, and amplitude, which affects its loudness. Understanding sound is essential in many applications, from designing concert halls to improving communication technologies.