Sprocket

A sprocket is like a gear that helps a machine move. Imagine you have a bicycle, the sprocket is the round, flat part that has little teeth around the edge. These teeth fit into the chain, which connects to the pedals and the wheel. When you push down on the pedals, the sprocket turns and the chain moves, making the bicycle's wheel turn so you can move forward.

So, sprockets help machines like bicycles, motorcycles, and even big machines like bulldozers move. Different machines have different types of sprockets depending on their size and the job they need to do. But in general, a sprocket is an important part of many machines that helps them move and work properly.