How to distinguish between energy and resources? 20

Energy The term "energy" has been rarely talked about in the past, and it was the two oil shocks that made it a hot topic of discussion. So, what exactly is "energy"? There are currently about 20 definitions of energy.

For example, the Encyclopedia of Science and Technology says: "Energy is the resource from which energy such as heat, light, and power can be obtained"; The Encyclopædia Britannica says:

Energy is a term that includes all fuels, running water, sunlight and wind, which humans can use to provide themselves with the energy they need by appropriate means of conversion"; The Encyclopedia of Japan says: "In various production activities, we use heat, mechanical, light, and electrical energy to do work, and various carriers in nature that can be used as the source of these energies are called energy." China's "Energy Encyclopedia" says: "Energy is an energy-carrying resource that can directly or through conversion to provide any form of energy required by human beings, such as light, heat, and power."

It can be seen that energy is a source of energy in various forms that can be converted into each other.

To be precise and simply, energy is a material resource in nature that provides some form of energy to humans.

Energy is usually classified according to its morphological characteristics or the level of transformation and application. The types of energy recommended by the World Energy Council are divided into: solid fuels, liquid fuels, gaseous fuels, hydro, electricity, solar energy, biomass energy, wind energy, nuclear energy, marine energy and geothermal energy.

Among them, the first three types are collectively referred to as fossil fuels or fossil fuels. The above-mentioned energy sources, which have been recognized by human beings, can be converted into some form of energy required by people under certain conditions. For example, firewood and coal, if they are heated to a certain temperature, they can combine with the oxygen in the air and release a lot of heat energy.

We can use heat for heating, cooking, or cooling, or we can use heat to generate steam, which drives a steam turbine to turn thermal energy into mechanical energy; It is also possible to use a steam turbine to drive a generator to turn mechanical energy into electrical energy; If electricity is sent to factories, enterprises, institutions, farming, animal husbandry and forestry areas and households, it can be converted into mechanical, light or thermal energy.

Resources Resources are materials, materials and materials that can be used in social life and work. Resources can be divided into: natural resources, renewable resources, network resources; production resources, living resources; Natural resources can be divided into land resources, water resources, forest resources, etc.

1. Energy from the sun. It includes energy directly from the sun (such as solar thermal radiation energy) and indirect energy from the sun (such as coal, oil, natural gas, oil shale and other combustible minerals and fuelwood such as biomass, water and wind energy).

2. Energy from the earth itself. One is the geothermal energy contained in the earth's interior, such as underground hot water, underground steam, and dry hot rock mass; The other is the nuclear energy contained in nuclear fuels such as uranium and thorium in the earth's crust.

3. Energy generated by the gravitational pull of celestial bodies such as the moon and the sun on the earth, such as tidal energy.

Energy is the material basis for the survival and development of human society, and has a particularly important strategic position in the national economy. Energy is the blood of a city, and it drives the operation of a city.

The more modern the city, the stronger the reliance on energy, because energy is responsible for maintaining the following important functions: lighting, transportation, catering, heating, cooling, and automatic management systems.

It includes energy directly from the sun (such as solar thermal radiation energy) and indirect energy from the sun (such as coal, oil, natural gas, oil shale and other combustible minerals and fuelwood and biomass, hydro and wind energy, etc.).

Energy from the earth itself. One is the geothermal energy contained in the earth's interior, such as underground hot water, underground steam, and dry hot rock mass; The other is the nuclear energy contained in nuclear fuels such as uranium and thorium in the earth's crust. Energy produced by the gravitational pull of celestial bodies such as the Moon and the Sun on the Earth, such as tidal energy.

The Importance of Energy Energy is the energy that humans use to sustain their survival activities**. With the development of social economy, people's demand for energy is increasing. Traditionally, the energy sources used are the heat provided by the sun and firewood, as well as the power of river water.

The energy we use today comes mainly from fossil fuels, but the stock of this resource on the planet is finite and depleted. Therefore, there is a need to develop other types of energy, including renewable energy. As you can understand from different information, if we don't change some of our current habits of using energy, all kinds of limited major fossil energy sources will be quickly exhausted.

If this development continues, in the absence of energy, the social economy and our desperate lives will be greatly affected. Therefore, we must cherish and make full use of existing energy resources. Since the energy we mainly rely on is limited, it is necessary to effectively manage the use of energy.

Sustainable development of society can only be achieved through a two-pronged approach to energy management and demand management.

Solar radiation is the main source of energy for the survival of life on earth. It is also the main energy source for the progress of human society.

It's not hard to understand why creatures collapse to survive, right? Without the sun, the food and drink are gone, the people are gone, and everything is dead.

Energy for Human Society:

Wind energy (wind power): This is caused by the sun's heating of the ground and indirectly heating the air to make it flow.

Hydroelectric power: It is still the energy of the sun that is absorbed by the atmosphere and the water is turned into steam to move to the upstream rainfall.

Fossil fuels: Coal and oil are produced by ancient organisms absorbing solar energy and then burying them underground.

Non-solar: Geothermal, mainly due to the heat generated by the decay of the Earth's own radioactive elements. Accounts for a very small part.

Nuclear energy, the energy produced by the fusion of heavy elements and hydrogen, is directly used by humans. The share is also smaller. France, which has the largest number of nuclear power generation, accounts for 12% of the country's electricity generation