According to National Geographic, electricity comes from energy sources such as fossil fuels, wind energy and hydroelectric power. Electricity is transported from a power station via power lines that carry electrical cur... More »

The propellers of wind turbines are rotated by the wind and activate a generator, which produces electricity. Wind turbines harness the power of air moving from a high pressure location to a low pressure location. The pr... More »

Lightning forms when opposite charges between a cloud and the ground or between two clouds develop. The charges have to be large enough to overcome the resistance of air to create a visible lightning spark. A single ligh... More »

The main sources of electricity are fossil fuels, nuclear power and renewable energy. Electricity is a secondary source of energy derived from primary sources. More »

Hydroelectric power is the converting of energy coming from running water to produce electricity. Hydroelectricity is a similar term that refers to the electricity that is produced from this process. More »

Wind turbines turn the kinetic energy of the wind into mechanical energy and then electricity through the use of a shaft and a gearbox that power an internal generator. Sensors in the wind turbine allow it to turn and ad... More »

The negative aspects of biomass energy are similar to those associated with the use of fossil fuels for generating electricity, with the exception that biomass fuels are renewable energy sources. Burning of biomass fuels... More »