Where are we?!? If you pull your trusty compass out, you can find out! So how, exactly, can you train a piece of metal to always point north? In this BrainPOP movie, Tim and Moby will teach you all you wanted to know about compasses and how they work! You’ll discover what Earth’s magnetic field has to do with it, and how it interacts with a compass needle. You can also find out how magnetic north differs from the North Pole, and how sailors use compasses to navigate! Land-ho!