Kinetic art, form of is a type of art that incorporates motion or motion-based elements. It is also known as 'kineticism' and is often associated with Op Art, which uses optical illusions to create the illusion of movement. The term 'kinetic art' was first used in the 1950s by sculptor Naum Gabo. The most common form of kinetic art is mobiles, which are sculptures made of suspended objects that move in response to air currents or other forces. Mobiles are usually made of lightweight materials such as wire, metal, wood, or plastic.