It's a toss up between which is more fun: a roller coaster or a water slide. They both have breathtaking ascents and hair-raising descents. In fact, a water slide is essentially a roller coaster, just without the safety harness or train seat and with the addition of a little bit of the cold and wet stuff. Want to understand the mechanisms behind these thrilling rides? Take our quiz and get to know all the behind-the-scenes information.