Looking for an abridged tale on how bridges work? In this BrainPOP movie, Tim and Moby will teach you all about them! You’ll see how they’re put together, the distances they can span, and the physical principles behind them. You’ll find out the differences between the three main types of bridges--beam bridges, arch bridges, and suspension bridges. Tim will show you how engineers add special supports called trusses to make bridges stronger. Plus, you’ll also learn how the forces of gravity, tension, and compression act on all bridges. Ready to build a bridge to a smarter you?