Sound Class 9 Notes

Sound Class 9 CBSE Notes – Chapter 12

There are various sources of sounds around us – from the birds, the leaves rustling in the wind to the cars and the sounds of our own voice. In science, we define sound as a form of energy that travels in waves. A body produces soundwaves and these vibrations cause the medium around the object to vibrate. We pick up these vibrations as audible cues. Please refer  Sound Class 9 Notes for more revision notes.