Inside: once peanuts space mashed with each other in a blender to do peanut butter, they kind a distinct substance dubbed Non-Newtonian fluid. Make part homemade peanut butter v us and also learn part physics at the very same time.

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I love come use daily familiar items to explore complicated scientific ideas. If friend tell your children that non-Newtonian liquid is a liquid through non-constant viscosity, they will most likely yawn and forget. Together scientists have actually discovered, we just retain about 5% that what we hear. If you present a pertinent demonstration, the retention jumps come 30%, but learning by doing has actually the most remarkable effect. It leads to 70% retention and also recall.


I first thought of making homemade peanut butter with my youngsters as a way to explore the changing states of matter: solid to liquid. As soon as you take it a handful of peanuts and apply a force on castle by mashing lock in a blender, you obtain butter, i beg your pardon is a liquid, right? Or is it?

If you take a seasoned of freshly made peanut butter and flip the upside down, would certainly it all circulation out? Nope! yet if you scoop up a little of peanut butter with a spoon and put the on your cracker, does the flow? friend bet! If you shot to eat it, it can even drip on her shirt.

So, it transforms out that peanut butter is a good example that non-Newtonian fluid. One minute the behaves like a solid, and the next it flows choose a liquid. Non-Newtonian fluids deserve to switch in between a solid and liquid state depending upon the forces acting ~ above them.

Do you understand what peanut butter, toothpaste, quicksand, and blood have actually in common? friend probably have actually guessed the by now; they room all examples of non-Newtonian fluids!

Do you desire to join us in making peanut butter while learning about states that matter and non-Newtonian liquids? all you require are peanuts!


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Peanut Butter Investigation

Take a spoon of water and a spoon of peanut butter. Pour it the end (or try to). I m sorry one acts an ext like a liquid? (Answer: water)Put a spoonful that peanut butter on a plate. Put a peanut (or various other nut) on another plate. Push on each v an index finger. I m sorry one acts an ext like a solid? (Answer: nut)Scoop a spoonful that peanut butter out of a jar. Note the challenge with which it was done. Now, with a spoon, intensely stir the rest of the peanut butter in the jar because that a minute. Scoop one more spoonful the peanut butter. Go it end up being easier or harder to scoop the out? (Answer: easier)Simple Viscosity Experiment. Take two jars of peanut butter (we put them in the refrigerator after blending): one smooth, the various other with chunks the nuts. Carry out a series of experiment to check out which one flows an ext easily. You have the right to scoop it with a spoon, spread out it ~ above toast, and flip a seasoned upside down. (Answer: the an ext chunks of nuts in the butter, the much more like a solid it will certainly act).Temperature experiment. Take three pieces of bread. Put one item on a bowl in a fridge. Toast the 2nd piece. And also leave the third one in ~ room temperature. Spread out the same peanut butter ~ above all three pieces. I beg your pardon toast has the runniest butter? (Answer: the toasted slice, if you used butter when it was still hot).Comparison experiment.

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If girlfriend made much more than one flavor v us, do this basic experiment. Scoop a spoon that each and turn them over her plate (or end your open mouth if you’re an extremely patient). I beg your pardon one takes longer to circulation out? The an ext it resists the flow motion, the higher the viscosity. (Note: If girlfriend didn’t perform a various flavor, you can use a seasoned of store-bought peanut butter because that comparison).

Viscosity Experiment

Are girlfriend interested in learning much more about viscosity? We freshly did a funny experiment to compare the viscosity the maple syrup, honey, ketchup, and thickened pie filling. Remain tuned!