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The energy sources and its types. descarga (58) :recycle: - Coggle Diagram
The energy sources and its types. 
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Coal
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It has traditionally been a very widely used source of energy, but nowadays, it is less used because the extraction is very expensiveand very polluting.
Petroleum
It is used as a fuel and raw material in the petrochemical industry and to produce electricity in thermal power stations and to make motor fuels.
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It is found in reservoirs located both underground and under the sea. Once it is extracted, it is transported through pipelines or by oil tankers.
Wind
These devices can be small turbines that cover domestic consumption or huge turbines over a hundred metres.
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Radioactive minerals
This reaction splits the atomic nucleus of a radioactive mineral, usually uranium, but also plutonium and thorium.
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Water
Water is held in a reservoir at a higher level than the plant. It then flows down a pipe to the plant. The force of the falling water turns the turbines (wheels) in the electrical power generators to produce electricity.
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Tidal energy is produced by using the movement of the tides, waves.
Natural gas
It is usually found in oil fields, near petroleum
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Sun
Like wind energy, photovoltaic energy can be produced using small installations for domestic use, or large solar farms with huge panels.
We use solar panels to capture the Sun’s energy and produce electrical (photovoltaic) and thermal energy.
Heat from earth
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Biomass
Biomass is used to generate heat, electricity and fuel.
Bioenergy comes from consuming biomass, made up of organic waste (wood, branches, straw, manure, etc.) and crops (soya, corn, etc.).
Primary resources
Primary sources are resources that remain in their original state, for example, sunlight, wind, minerals, etc.
Secondary resources
Secondary sources are resources that have been transformed from a primary source into electricity or fuel.