Same as any other generator. The key part is a machine with magnets, and certain interactions between magnetism and electricity - basically, if a wire moves through a magnetic field, a voltage will be generated. You can read more details about this in any high-school physics book.
A generator transform kinetic energy to electrical
It ends up with energy
Ocean surface waves provide kinetic energy. This may be used to mechanically drive electrical generators, converting kinetic energy into electrical.
It turns the pressure energy into kinetic energy that moves the rotors electric generators to produce electricity
All mechanical (power station) generators do this.
Wind turbine generators are used to convert the kinetic (movement) energy of the wind directly into electrical energy, which is used to power electrical appliances and needs no further conversion.
Photo voltaic cells (solar cells) convert light energy into electrical energy. Electric generators convert kinetic energy into electrical energy. Internal combustion engines convert chemical energy into kinetic energy.
Hydro-electric powerplant
The electrical energy of thermal energy is called kinetic energy. An example of electrical energy converted to thermal energy is a toaster drawing current from an electrical outlet.
Kinetic energy. If you consider a larger scale, i.e., the electrical current, this is usually called electrical energy.
Neither, it is chemical! Static and current electricity are examples of it.
I believe electrical energy is considered potential energy and not kinetic. Kinetic energy is when an object is moving, electrical energy is a stored energy that can be converted to kinetic energy.