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Questions for Discussion: Designing Electric Circuits: Door Alarm
Choose one of the door alarms in the video and draw a sketch of it. Label the power source and the conducting material. What has to happen to complete the circuit? Why didn't the cast members use full-size doors to test their alarms? If they didn't have the smaller models, could they have used a full-size door? Imagine that one of these door alarms is attached to your bedroom door. What would be the strengths and limitations of its design? Can you think of a way to overcome the limitations? See if you can find a building where a door is alarmed. How does this alarm work? It's your turn to solve the door alarm problem. What is your design? What materials would you use?
