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Roller coaster innovations are not limited to loops, dips, and spirals. In this riddle, students are asked how a coaster can be launched without an initial hill. Before answering, students go to a clue page where they read about and watch a video clip of two girls using springs to launch a pinewood derby car. Once students choose the best answer from the riddle's three answer choices, a short video clip about air-launched coasters plays. A roller coaster designer explains how compressed air can now be used to propel coasters. A few additional details about air-launched coasters are provided in the text-only version of the riddle, available once the clip has played.
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