We had a great Halloween Party, making Haunted Houses and Spooky Slime or Oobleck. We were impressed by how engrossed the children were with Oobleck with a few remembering or attempting to commit to memory that it is a non-Newtonian Fluid.
Oobleck doesn’t quite follow the rules, this suspension only behaves as a fluid some of the time. For this reason Oobleck is known as a non-Newtonian Fluid. If you apply a force to it by smacking or squeezing it this fluid will become a solid.
A non-Newtonian fluid is a fluid that does not follow Newton’s law of viscosity. In non-Newtonian fluids, viscosity can change when under force to either more liquid or more solid. Ketchup, for example, becomes runnier when shaken and is thus a non-Newtonian fluid. Children were directed to look up the Science Sparks page https://www.science-sparks.com/10-of-the-best-witches-potions/