Energy issues in Scandale

 

It's difficult to write about energy without someone complaining! A recent brilliant question on my forum was "Does energy actually exist and do you teach that it does?" So consider this. The statement that the fall "creates" potential energy is a bit dodgy: the Principle of Conservation of Energy states that energy cannot be created or destroyed. The most up-to-date usage in English schools says that the gravitational store of the water empties and the kinetic store fills as the water falls. I prefer the usage here, that potential is converted into mechanical energy. Make your own minds up.