How a Hill and a Hose Become a Water Slide #Engineering #WaterSlide #HowItWorks #Science #learnontiktok

If you lay a plastic sheet down a hill and spray it with a hose, you have a water slide. But every writer spins off the side into the grass, so you bend the slide into a channel with walls. But a little hill is slow, so you build a steel tower on top of it with stairs to the top, and run the slide down into a pool in pieces of fiberglass bolted flange to flange with a seal in every joint so it doesn't leak. This is a flume, but the hose can't wet a slide this long, the top runs dry. You stick and it burns your skin, so you put a pump in the pool that sends the same water back up a pipe to the top, round and round. And that water is not there to cool you down. It is grease, a thin layer of water you ride on, so you barely touch the slide at all. But every night the pump stops, and the pipe drains back into the pool, so you add a one-way valve that keeps it full, so the water runs the second the pump starts. This is a check valve, but on a curb you fly straight over the wall, so you tilt the outside wall up high, and your own speed pushes you up and around. This is a banked turn. But the next writer lands right on top of you, so a sensor at the bottom keeps the light at the top red until you have left the pool, and you ride lying on your back. Feet first, arms in, so your elbows never hit the wall. Out of handrail, a lifeguard's chair, and a sign with the height limit. Congratulations, you have built a water slide.