The Science of Sound: Musical Hanger

You have to hear it to believe it. ExpeRimental features a Vibration Experiment with simple tools from around the house http://rigb.org/experimental/musical-coat-hangers

A week ago we were using the xylophone when O asked me why the bars make noise when we hit them.
This experiment was a reasonable hands-on way to demonstrate an answer.

When Daddy came home, he also go involved.

EXPAND ON THE SCIENCE OF SOUND
Entrainment. If you have ever heard Himalayan singing bowls, you will understand the effect sound can have on the human body http://www.harmonyofthespheres.net/Science_of_Sound.html 

Liquid Xylophone. Create your own xylophone sound in the kitchen! http://www.hometrainingtools.com/a/sound-wave-vibration-science/