SOUND

Class-VIII

Subject- Science

Teacher's Na​me- Susmita

What produces sound?

​sound

Sound is a form of energy produce by vibrations.

Sound plays an important part in our daily lives. It helps us to communicate with each other. We hear a wide variety of sounds in our surroundings.

Sound is produced by a vibrating body.

Vibration is the to and fro or back and forth motion of an object.

Eg :- If you strike a school bell, it vibrates and produces sound. If you pluck a stretched rubber band, it vibrates and produces sound. If you beat a drum, its stretched membrane vibrates and produces sound. If you blow a bugle, the air column vibrates and produces sound.

Sound is a form of energy which travels in the form of waves. It produces hearing sensation in our ears. To produce sound we are to make vibrations in a body.

For example: Place a bowl upper side down and strike it with spoon. The bowl start vibrating produces particular sound that can be heard.