Oobleck is an easy to make substance that has some interesting physical properties. Oobleck is an example of a non-Newtonian fluid. Many common liquids like water and alcohol have a constant viscosity. But it can be liquid when held loosely in your hand, and can also act like a solid if hit more violently. Here on a speaker the differences in sound frequency act on it making it more or less rigid.
How to Make Oobleck
Place 1 cup (8 ounces) of corn starch into a bowl.
Stir in about 1/2 cup (4 ounces) water
(The exact amount is not necessarily important; what is important is the ratio of 2:1 , corn starch to water). Stir until the desired consistency is reached. Add more water to make it thinner or more cornstarch to make it thicker. If you like, you could also add a few drops of food coloring.
(The exact amount is not necessarily important; what is important is the ratio of 2:1 , corn starch to water). Stir until the desired consistency is reached. Add more water to make it thinner or more cornstarch to make it thicker. If you like, you could also add a few drops of food coloring.
Take it out and enjoy playing. Once you're done you can clean up and talk about how much fun it was to make oobleck!
Store in an airtight container or zipper bag.
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