Hi everybody!

This is a picture of my hand in the Exploratorium in San Francisco. It is covered with Black sand. Black sand has iron in it. If you put it on a magnet it will stick up because iron and magnet are attracted to each other. I have rested my hand on a magnet and poured Black sand on it. And that is how my hand is so spiky!

A spiky hand by an AmaraKid.