Hydroelectric energy is energy formed by moving water. It has been around for along time. It was
used to ground wheat. Now hydroelectric energy is used to create electricity. Hydroelectric energy is first created
by building a dam. This dam blocks water flow, so only a certain amount will pass through. The water that does
get through powers turbines. The moving water causes the rotor to rotate in the magnetic field to create electricity.
The water then exits the front of the dam.