What Make Loud and Soft Sounds

Kids, especially first graders, never cease to amaze me. Today I was teaching a lesson on loud and soft and we were making a list on the board of things that are loud and soft. I'm getting all the regular answers one would expect to hear...kittens, lions, trains, etc. Then this kid raises his hand and is so excited to get to say something and he says, "electricity!" WHAT? I guess it does make a soft sound...ha! Kids! You Gotta Love 'Em!