Scenario for Final Project

Problem:

Oh no! The U.S. Coast Guard has alerted the lighthouse keeper at Portland Head Light that a pod of whales is blocking the entrance into Portland Harbor. So that the whales do not get hurt by the boats, we must keep the boats away from the whales.

Now, the lighthouse keeper needs your help. 

What sound can you create to stop the ships and keep them away from the whales?

How can you communicate a message with light?