We just learned about the Pneumatic Cylinder.
Another part of the world of machines is a Turbine.
This is a type of spinning wheel that uses liquid or gas flowing and uses it to spin around.
An old type of turbine would be a water wheel or a wind mill.
These machines would take wind or water to spin them around, and then that spinning would do something useful like help to grind up grains into flour.
Now we use turbines for things like using the power of a waterfall to make energy that people use for electricity in their houses.
(from: wikipedia - turbine)
Kid Facts - Blast from the past: Toxicology
