Science

Amplitude

In this Class 9 Science topic from “Sound Waves: Characteristics and Applications,” students learn that amplitude is the maximum displacement of particles of a medium from their mean position as a sound wave passes. They study how amplitude is represented in wave diagrams and understand that a greater amplitude generally produces a louder sound, while a smaller amplitude produces a softer sound. The topic also helps distinguish amplitude from frequency and pitch, linking wave characteristics to everyday sounds and basic applications.