Kinetic art is like a toy that moves all by itself without anyone touching it. It usually has lots of moving parts that do different things like spinning, wiggling, or bouncing.
Imagine you have a toy car that you push with your hand to make it move. Now imagine the car has a little motor that makes it move all by itself. Kinetic art is kind of like that toy car except it's usually much bigger and has lots of different moving parts.
Some people make kinetic art out of metal or wood, while others use old machines or electronics to create their art. The really cool thing about kinetic art is that it's always different. Every time you look at it, the parts are moving in a new and interesting way.
So if you ever see a big piece of art that looks like it's alive and moving on its own, chances are it's kinetic art!