Experiment Ha-05

Bimetal Strip

Description: Dissimilar metals are bonded or soldered together and attached to a handle. When the metals are heated, the metals expand differently and make the strip bend. Video clips of this experiment are available: .avi (Windows) and .mov (Mac).


Experimental setup before heating bimetal strip.


Bimetal strip being heated. Notice that the strip is bending visibly.




This experiment involves fire. Know where the classroom fire extinguishers are located before performing the experiment and be cautious with flame. Use the handle when heating the bimetal strip and do not touch the metal until it has cooled sufficiently. Extinguish matches in water.


Materials: bimetal strip, propane torch, matches


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This page was last updated on Friday August 15, 2008 8:37 PM