Compound Bar Metal Plastic 9.75" H Heat Expansion Science Pack of 10 by GSC International

This compound bar pack provides a clear and effective visual demonstration of thermal expansion for physical science instruction. Each bar features a bimetal strip mounted within an insulating plastic handle. When heated, the two metals expand at different rates, causing the bar to bend and demonstrating how thermostats respond to temperature changes. This hands on model helps students understand heat behavior and material properties through direct observation. Designed for repeated classroom use, the pack of 10 is ideal for group demonstrations and lab activities. Product dimensions for each bar 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
• Visible bending action illustrates thermostat operation
• Insulating plastic handle supports safe handling
• Pack of 10 supports classroom group activities
• Includes instructions for guided teaching