Traditional Culture Encyclopedia - Traditional festivals - What are the traditional energy sources?
What are the traditional energy sources?
1, solar energy:
Solar energy is a kind of renewable energy. Refers to the thermal radiation energy of the sun, mainly manifested as the so-called solar rays. In modern times, it is generally used to generate electricity or provide energy for water heaters.
2. Water:
Water is an inorganic substance composed of hydrogen and oxygen, which is nontoxic and drinkable. At normal temperature and pressure, it is a colorless and odorless transparent liquid, which is called the source of human life and an important substance to maintain life, also called hydrogen oxide.
3. Natural gas:
Natural gas refers to all natural gas, including gases formed by various natural processes in the atmosphere, hydrosphere and lithosphere. The commonly used definition of "natural gas" for a long time is a narrow definition from the perspective of energy, which refers to the mixture of hydrocarbon and non-hydrocarbon gases naturally contained in the stratum.
4. Oil:
Petroleum is a thick dark brown liquid, which is called "industrial blood". There are oil reserves in some parts of the upper crust. The main component is a mixture of alkanes, cycloalkanes and aromatic hydrocarbons, which is one of the main targets of geological exploration.
5. Coal:
Coal is a solid combustible mineral gradually formed by ancient plants buried underground through complex biochemical and physical-chemical changes. Coal is called black gold and industrial food. Since18th century, it has been one of the main energy sources used in the human world.
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