Experiment with sound...

Since we are learning about bats this week, I decided to do an experiment on sound because bats use echolocation to help them find direction...

We filled up several glasses with different amounts of water and took turns hitting them with a spoon and listening for the pitch and placeing them in order by pitch...

The kids did really well and learned how the water volume would affect the pitch of the sound emitted from the glass...

You can find this and other experiments like this at Steve Spangler Science...