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In the Sorting Salt and Pepper video we saw that we could mix salt and pepper into a pile and then separate them easily by using the static charge on a balloon. That is one way to separate salt and pepper, but there are many others. How many can you think of? Don't read any more until you have spent some time thinking of as many different ways as you can.
I developed this activity while producing some science videos to go with a science textbook. They wanted students to be able to measure potential and kinetic energy, using everyday objects. Thanks to the abundance of cell phones, this is an easy way to do that.
