This video shows how to build a Gauss rifle, a fun physics experiment that uses magnets to launch steel ball bearings at high speeds. To view full directions for this science project, see the "Build a Gauss Rifle!" Project Idea at Science Buddies: https://www.sciencebuddies.org/science-fair-projects/project-ideas/Phys_p081/physics/gauss-rifle?ytid=oWkOUe3AUl4&ytsrc=description Science Buddies also hosts a library of over 1,100 other free science fair "Project Ideas" for K-12 students, in a wide variety of topic areas from Astronomy to Zoology! Visit us at https://www.sciencebuddies.org/?ytid=oWkOUe3AUl4&ytsrc=description to see more Project Ideas for hands-on science and engineering.