Science

Human ear

In this Class 9 Science topic, students explore the structure and working of the human ear as a natural sound-sensing system. They learn how the outer, middle, and inner ear receive sound waves, make the eardrum and tiny ear bones vibrate, and convert these vibrations into nerve signals interpreted by the brain. The topic connects with Sound Waves: Characteristics and Applications by explaining hearing, pitch, loudness, audible range, and the importance of protecting the ear from excessive noise.