WONDER #979: How Do Automatic Doors Know When To Open?

Question 1 of 3

Automatic doors operate with the help of what?

  1. magic
  2. air
  3. magnets
  4. sensors

Question 2 of 3

Which of the following is something an automatic door sensor might sense as a trigger to open or close?

  1. pressure
  2. motion
  3. light
  4. all of the above

Question 3 of 3

Automatic doors can help conserve energy, similar to what other type of door?

  1. revolving
  2. screen
  3. front
  4. storm

Check your answers online at https://wonderopolis.org/wonder/how-do-automatic-doors-know-when-to-open.