What’s the Matter?
Posted by Craig Knebel
The eighth graders are exploring matter, its properties and changes. They have learned that the four states of matter are solids, liquids, gasses, and plasma. But some items defy labeling. Think of gravy – it thickens as you stir it. Quicksand makes you sink as you struggle. These are Non-Newtonian fluids. They act like both liquids and solids. They students enjoyed making Ooblek, another example – it drips off of your fingers, but when squeezed, feels like a solid.
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