Thursday, July 25, 2019


We just learned about the Gear.

Another piece of a machine is a Sprocket.

This is a wheel with teeth that looks a lot like a gear, but it is made to hook into a chain or a track.
If you look on a bicycle you will see a chain hooked to a wheel with teeth.
When you move the pedals it turns the wheel, which moves the chain, which turns the bike wheels and makes it go.
The wheel with teeth hooked to your pedals is a sprocket.

Sprockets are also used in things like tanks, or in other big machines.

(from: wikipedia - sprocket)

Kid Facts - Blast from the past: Gyroscope