This compound bar is designed to provide a clear visual demonstration of thermal expansion in physical science classrooms. The apparatus consists of a bimetal strip mounted within an insulating plastic handle. When the metal strip is heated, the unequal expansion of the two metals causes the bar to bend, illustrating how thermostats respond to temperature changes. This simple and effective model helps students understand heat transfer and material properties through direct observation. Suitable for repeated classroom demonstrations, the compound bar supports lessons on properties of matter and thermal behavior. Product dimensions are approximately 0.7 inches long x 0.7 inches wide x 9.75 inches high. Instructions are included.
Key Features
- Demonstrates thermal expansion using a bimetal strip
- Visual bending action illustrates thermostat operation
- Insulating plastic handle supports safe handling
- Compact design suitable for classroom demonstrations
- Includes instructions for guided educational use
