Density Paradox Set
Description
This set consists of two cylindrical solid objects with attached hooks. We have all learned that an object will float if its density is less than the density of the liquid and sink if its density is greater. Will these objects float or sink?
When the objects are dropped into a beaker of water, they immediately sink. Then, a short time later, they rise to the surface and float. Removed and dropped into another beaker, they float, and then a short time later, they sink! Students are challenged to deduce the cause of this strange behavior.
Included are demonstration instructions and discussion questions to engage students with the demonstration.
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