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A science lesson...

What is ooblek?

Why is it so hard to get out of quicksand? Is it a solid? Is it a liquid? Can it be both? A non-Newtonian substance (OOBLEK) is a mixture of cornstarch and water. It is a normal liquid and a normal solid. But this simple mixture shows how changes in pressure, instead of temperature, can change the properties of some materials.

THE PRESSURE
Applying pressure to the mixture increases its viscosity (thickness). A quick tap on the surface of Ooblek will make it feel hard, because it forces the cornstarch particles together. But dip your hand slowly into the mix, and see what happens—your fingers slide in as easily as through water. Moving slowly gives the cornstarch particles time to move out of the way.

WALK ON A LIQUID!

The OOBLEK WALK CHALLENGE is coming to your city with the Food Fight 5K! Can you make it all the way across the tank without sinking? Try your luck walking on a liquid! The OOBLEK CHALLENGE is not included in the 5K ticket price, and must be purchased separately for $10.00.