Nina investigates what an amphitheatre is - with the help of Belle, her hearing neuron.

Experimenters Arnav and Ayomide visit Nina in her workshop and discover how sound travels. Next, they visit a real amphitheatre in Lyon, France, to find out what happens to sound when it hits a hard surface. Finally, they do an experiment that explains what amphitheatres do to make sound travel all the way to the back. Show less