Chapter 13: Sound Class 8 Science

Описание: Chapter 13: Sound

13.1: Sound is Produced by Vibrating Bodies
13.2: Sound Produced by Humans
13.3: Sounds Needs a Medium for Propagation
13.4: We Hear Sound through Our Ears
13.5: Aptitude, Time Period and Frequency of a vibration
13.6: Audible and Inaudible Sounds
13.7: Noise and Music
13.8: Noise Pollution