Robotics crossword puzzle

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Across
  1. 2. The number ratio of teeth in the larger gear to the number of teeth in the smaller gear.
  2. 3. The force that resists motion
  3. 5. Negative electricity charge.
  4. 6. A control system for an operation or process in which there is no self-correcting action.
  5. 9. A device that stores chemical energy and converts it to electrical energy.
  6. 10. An automatic control system in which an operation, process, or mechanism is regulated by feedback.
  7. 11. A series of gears (at least two) that collaborate to increase or decrease speed or rotation.
Down
  1. 1. Allows electrons to flow through the current.
  2. 3. Used to close a circuit
  3. 4. Converts electrical energy into mechanical energy. Used for precise control.
  4. 7. Positive electric charge.
  5. 8. The basic unit of a chemical element