Question: oobleck why does it behave that way?
Answer: Oobleck is a non-Newtonian fluid, or a fluid that doesn't behave the way fluids we think of as “normal,” like water, behave. ... This property of oobleck comes from the structure of the cornstarch grains, which tangle and “lock up” when pressure is applied, causing the oobleck to act like a solid under pressure!