Explain sound energy.

Sound energy is a form of mechanical energy produced by vibrations. These vibrations create pressure waves that travel through a medium, such as air or water, and can be detected by our ears.

Two properties of sound are pitch and intensity. Pitch refers to how high or low a sound is, determined by its frequency. Intensity, or loudness, is related to the amplitude of the sound wave and how much energy it carries.

a) Loudness: Loudness is the perceptual characteristic of sound that is primarily determined by the intensity of the sound wave. It describes how strong or weak a sound seems to a listener.

b) Amplitude: Amplitude is the maximum displacement or distance moved by a point on a vibrating body or wave measured from its equilibrium position. For sound waves, a larger amplitude corresponds to a louder sound.

A musical note has a regular, periodic waveform with a definite pitch, often composed of a fundamental frequency and harmonic overtones. Noise, on the other hand, has an irregular, non-periodic waveform and lacks a definite pitch or clear harmonic structure.