Marble it up big easy9/6/2023 ![]() ![]() These are the most common roller coaster elements, but I've also seen funnels made of newspaper, jumps, tunnels, corkscrews, helixes, double and triple loops, suspended tracks, and configurations that don't have a name. In the photo with the upside-down loop, you can also see how to secure track alongside a wall by using a long piece of tape. Upside-down loops are created by taping a piece of track upside-down onto the end of a track, then curving the upside-down piece so that it becomes right-side up. If the hill is too small and the marble is travelling too fast, the marble's momentum will carry it up the hill and then continue it's trajectory off the track. This is another good opportunity to illustrate the negative effects of momentum. Hills can be made by securing the track to a flat surface, then lifting the middle of the track up and securing the other end. Centripetal force is like momentum: it's when an object wants to keep moving forward, except that it's forced into a circular path. You can explain that loops work because of centripetal force. Loops can be created by securing the track to a flat surface, then bending the track upside down and securing the other end. Now for the fun stuff! A roller coaster that just goes in a straight line can be fun, but I find it much more satisfying to include exciting elements.
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