The most basic ratio is 2 parts cornstarch to 1 part water. There are other ways to make oobleck — with flour, or with baking soda. And you can find the complete list of oobleck recipes at the bottom of this post.
If you want to let your child try to stand on it and see what happens, get a large enough container. A plastic foot bath, baby bathtub or wading pool are all good choices. But if they stand still in it, they will sink. This is because when you add force, it becomes thicker. The molecules all get closer together when pressure is added. Yes, it actually has some real uses too. The best way to dispose of oobleck is in the trash can, not the drains.
But if you do want to wash a dish out in the sink, use hot water and make the mixture runny before dumping it down. Be careful when you make Oobleck. Just like in the book by Dr. Seuss, this stuff will be difficult to get out of fabrics and clothes. You can use a variety of liquids with cornstarch too. Are you ready to make some Oobleck with your kids? Here are our favorite Oobleck recipes. The thing that makes this such a perfect science experiment for kids of all ages is how fun it is. Browse more fun science experiments on Raising Dragons and keep exploring this fun world!
What is Oobleck? Bartholomew and the Oobleck The name Oobleck comes from a book Dr. Is Oobleck a liquid or solid? What is a Non-Newtonian Fluid? Use a spoon or spatula to slowly mix the cornstarch and water. If you mix to quickly, it will be very difficult to mix as the mixture hardens when pressure is applied.
If you mix slowly the spoon will be allowed to move through the mixture and combine the ingredients. It can be helpful to explain it to children like sand at the beach.
This article was published by Michigan State University Extension. Science ideas for young children Part 9 — Oobleck. Here are some examples: Solid Liquid Gas Holds its shape May turn to a liquid if enough heat is present melting Cannot be compressed Takes the form of the container it is in May turn to a gas if enough heat is present evaporation May turn to a solid if it gets cold enough freezing Cannot be compressed Takes the form of the container it is in May turn to a liquid if it gets cold enough condensation Can be compressed to fit in a smaller space There is a substance that exhibits the properties of both a solid and liquid called oobleck.
The recipe for oobleck is: 1. Punch it! Does your fist go in? Why or why not? Pour it slowly from one bowl to another. How can it pour when it seems solid? Does the speed at which you pour make a difference? Try cutting it with a butter knife.
Try stabbing it quickly or slowly slicing it. Does it make a difference? Take a fistful of the oobleck and hold it as tight as you can in your hand. What happens? Put some in a rimmed cookie sheet on a subwoofer speaker. Then have them set the action figures on top. This can be fun to act out. The Oobleck mixture isn't your typical liquid—or solid. The cornstarch-and-water mixture creates a fluid that acts more like quicksand than water: applying force squeezing or tapping it causes it to become thicker.
If you were trapped in a tub of Oobleck, what would be the best way to escape? Share your Oobleck observations and results! Leave a comment below or share your photos and feedback on Scientific American 's Facebook page. Cleanup Wash hands with water. Add plenty of extra water to the mixture before pouring it down the drain. Wipe up any dried cornstarch with a dry cloth before cleaning up any remaining residue with a damp sponge. More to explore " What is Jell-O? Already a subscriber?
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