The portion of output energy that performs the intended function.
A device that converts mechanical energy into electrical energy.
Non-renewable fuels formed from the remains of ancient plants and animals over millions of years, including coal, oil, and natural gas.
A machine with blades that spin when pushed by water, steam, or gas, often used to generate electricity.
Heat energy that comes from inside the Earth.
Electricity generated by the movement of water, usually from dams.
Energy an object has because of its height above the ground. The higher an object is, the more gravitational potential energy it has.
A fundamental law stating that energy cannot be created or destroyed, only converted from one form to another.
Stored energy that an object has because of its position, arrangement, or state. This energy has the potential to be converted into other forms.
The complete range of all types of electromagnetic radiation, including radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.