Source of Sounds

Knocking the door

• Source of sound

• Not source of sound

A bundle of pencils

• Source of sound

• Not source of sound

Playing clarinet

• Source of sound

• Not source of sound

Blinking the eyes

• Source of sound

• Not source of sound

Waving hand

• Source of sound

• Not source of sound

Laughing

• Source of sound

• Not source of sound

Nailing

• Source of sound

• Not source of sound

Screaming

• Source of sound

• Not source of sound

Beating the drum

• Source of sound

• Not source of sound

Bird chirping

• Source of sound

• Not source of sound