What is energy?

Energy is the ability to do work.

Gears transfer or move energy.

You will build a simple or a compound gear train.

Less Comfortable: Build something with 4 gears that turn.

Comfortable: Build a compound gear train with at least 4 shafts.

More Comfortable: Build a compound gear train with at least 4 shafts that gears up and or gears down.

Gearing up and gearing down, explained