What does a pneumatic system primarily use to create motion?

A pneumatic system primarily uses compressed air to create motion. Compressed air functions as the medium to transmit energy through the system, utilizing the principles of fluid dynamics. When air is compressed and directed through tubes and actuators, it can exert force, enabling movement in various components such as cylinders and valves. This process makes pneumatic systems suitable for applications requiring quick motion or the ability to lift and move heavier loads efficiently.

In contrast, electrical energy is used in electric motors to provide motion but does not fall under the category of pneumatic systems. Hydraulic fluid is specifically used in hydraulic systems, which operate on a different principle involving liquids rather than gases. Mechanical gears may transmit motion and change speed or direction, but they do not generate the motion; instead, they rely on another power source. Therefore, the use of compressed air is fundamental to the operation of pneumatic systems.