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Automatic Doors
Young children understand that when a person comes close to an automatic door, a sensor notices them, and the door opens and closes using the power of a machine.
💬 What Is an Automatic Door?
An automatic door is a door that opens by itself. It opens even if you do not push or pull it with your hands. You often see them at stores, hospitals, and train stations.
🤔 Where have you seen an automatic door before?
💬 It Notices When People Come
Above the door, there is a machine called a sensor. The sensor notices when a person comes close. Then it sends the door a signal that says, “Please open.”
🤔 Where on the door do you think the sensor is?
💬 A Machine Moves the Door
Above the door, there is a machine that makes it move. When the motor moves, the door slides sideways. That is why the door opens smoothly.
💬 It Closes After You Walk Through
After people walk through, the door slowly closes. If someone is nearby, it may open again. Near an automatic door, we walk instead of running.
🤔 How should we walk near an automatic door to stay safe?