For the project draw a labeled diagram of water reservoir, that is hydroelectric power station, where water comes through different water sources like precipitation, and through rivers get collected in dams( water reservoirs), from here water falls on turbines and rotate them, by rotation of turbine energy is produced, and than finally this energy through transformers gets converted into electricity.
In this example you have all types of energy that is required to complete your project.
For example when water is running in rivers , it has kinetic energy, when gets collected in dam( reservoir) ,it has potential energy, when falls on turbines it gets converted into mechanical energy, and finally through transformers gets transformed into electricity, that is electric energy.
so it's all about the law of energy conservation.