Drag the metals into the correct order based on your table data!
🔥 Expands MOST ⬆️
🔥 Expands LEAST ⬇️
🧊 Contracts MOST ⬆️
🧊 Contracts LEAST ⬇️
Step 2: Build the Fire Alarm Circuit
Select the correct metal combination so the strip bends UP to touch the contact when a fire breaks out!
Step 3: AC Thermostat Challenge
A thermostat uses a gap to maintain a temperature! Predict how this strip will bend when the room gets hot. When the AC turns on, notice how it cools all the way down to 23°C to break the circuit again!
Top Layer: ALUMINIUMBottom Layer: STEEL
Make a prediction, ensure the Main Switch is ON, and start the heat!