Quicksand and the cornstarch-water mixture are both non-Newtonian fluids, meaning that their viscosity changes with the type of force applied to it. The way that a liquid flows or moves is affected by its viscosity. Weird, huh? But the way this cornstarch-water mixture behaves is very similar to how quicksand behaves. But when you tried to move your hand through it quickly or hit the substance very hard, it behaved like a solid. Whenever you gently and slowly moved your hand through the cornstarch-water mixture, it behaved like a liquid. Did the substance splatter everywhere or did it stay put in the bowl? (If it splattered, add more cornstarch.) What Happened: ( Be careful not to hurt yourself on the bowl!) Make sure to hit the substance hard and pull your fist back quickly. Try punching the cornstarch-water mixture. Then try again, this time relaxing your hand and pulling it out slowly. If your mixture is deep enough to submerge your entire hand in it, try grabbing a handful of the mixture and pulling your hand out quickly. Was it easier to move your hand slowly or quickly through it?ģ. Move your hand through the mixture, slowly first and then trying to move it really fast. You should notice that your hand sinks in the mixture like you would expect it to do. After making your mixture, gently lay your hand on the surface of the cornstarch-water mixture. So if you use a regular sized box of cornstarch (about 16 oz), you will use about 1-1/2 to 2 cups of water.Ģ. The approximate ratio of the cornstarch-water mixture is 1-1/4 cups of cornstarch to 1 cup of water. In the plastic mixing bowl, combine small amounts of water and cornstarch together to form a mixture that looks like heavy whipping cream and has the consistency of honey. A much easier and more dependable way to make ‘quicksand’ is to use cornstarch instead of sand.
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