Demonstrate the Laws of
Thermodynamics
This brass ball fits easily through the matching ring when they are both at
room temperature. Heat the ball in a flame, and it expands so that it no
longer fits through. Challenge your students to predict what will happen if
you heat the ring instead!
Hint: Think about enlarging a photograph.
With the ball and ring comes a data sheet that provides instructions and an
explanation of the properties at work in this experiment. The data sheet
also includes a list of related products to help with this experiment and
other lessons on temperature change, thermal expansion and the laws of
thermodynamics.
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