The main sources of electricity are fossil fuels, nuclear power and renewable energy. Electricity is a secondary source of energy derived from primary sources.Know More
Electricity is a secondary source of energy because it cannot be extracted from the ground, like fossil fuels, or captured from moving phenomena, such as water or wind. Most electricity consumed in the United States has a fossil fuel as its source, according to the United States Environmental Protection Agency. Renewable resources, such as wind and solar, represent a small but growing percentage of electricity sources.
Fossil fuels occur naturally in the earth and are the remains of living organisms from the geological past. They include coal, oil and natural gas, which generate electricity when they burn in large electric power plants.
Nuclear power is a nonrenewable energy source that uses radioactive materials as part of the process of heating water to generate electricity. The process generates zero atmospheric emissions, as stated by the National Academy of Sciences.
Renewable energy sources are naturally replenished and include biomass, hydro, geothermal, solar and wind. Some of these renewable sources are intermittent, such as wind, which can create complications when using them to generate electricity on a large scale.Learn more about Electricity
Electricity is important because it is versatile, controlled easily and is used in everyone's daily life. Without electricity, humans would have to use other forms of energy that are less efficient.Full Answer >
According to the Occupational Safety & Health Administration, electricity is dangerous because it can cause burns, nerve damage, cardiac arrest and death. Alliant Engery also notes that the majority of the human body is composed of water, which makes it a good conductor of electricity.Full Answer >
According the United States Geological Survey, hydroelectric power offers clean energy without the emissions created by fossil fuels, but it is very location- and precipitation-dependent and can have major land and ecological effects. Hydroelectric dams can require major changes in natural waterways to function, and the dams may disrupt or displace humans and wildlife populations.Full Answer >
The flow of electricity is commonly called an electric current, or a flow of charge. Electric current is considered a rate quantity and is measured as the rate at which the flow of charge passes a fixed point on a circuit.Full Answer >