Energy: Types, Applications, Examples And Characteristics

Energy: Types, Applications, Examples, Features, Top 10 Characteristics

We explain what energy is, the types that exist and what are the laws that govern it. Also, its general characteristics and examples.

What is Energy?

Commonly, energy is understood to be the capacity of a system, an object, particle or phenomenon to carry out a certain work, such as moving an object, transforming it or heating it . In non-scientific fields, energy can be understood as the ability to give rise to a phenomenon or the intensity that something has.

The word “energy” comes from the Greek word enérgeia , which means “activity.” This term is used in various areas of knowledge such as physics, chemistry, biology , technology and economics , always to refer to the ability to perform a job.

This concept is particularly important in physics , a science that deals with studying energy, the different types and their manifestations in the universe .

Energy concept

Energy is a measurable or measurable quantity , that is, it can be calculated and is involved in all forms of action or reaction.

The state of motion of a body or system, chemical transformations or changes in the state of aggregation of matter can be explained in terms of energy exchanges.
All objects, systems and particles in the universe have energy and without it life would be impossible.

Types of energy

Types of energy
Hydraulic energy is obtained from the kinetic energy of rivers.

According to the elements involved in its generation, we can talk about the following types of energy:

  • Electricity . It is a form of electromagnetic energy that is produced when there is a difference in electrical potential between two points, resulting in an exchange or flow of electrons called “electric current”.
  • Chemical energy . It allows atomic and molecular unions and reactions, so it is an essential form of energy for life, since living beings require it to maintain their own functioning (metabolism).
  • Kinetic energy . It is a type of mechanical energy that involves the movement of the particles of a given physical system. It is the energy that objects that are in motion have.
  • Wind power . It is a type of energy associated with the wind and its natural thrust force, usable in wind fields to transform it into electricity .
  • Heat or thermal energy . It is related to temperature and the ability to receive or deliver heat. An object or system that receives heat energy (heat) increases its temperature as long as it is not undergoing a change of state of aggregation .
  • Magnetic energy . It is the energy generated by the presence of a magnetic field . It is typical of ferromagnetic relationships, such as those that allow the attraction between a magnet and certain metals .
  • Solar energy . It is the heat and light radiation from the sun , used by plants to carry out photosynthesis and by other living beings to heat themselves.
  • Atomic energy . It is the energy possessed by the nuclei of atoms and what allows them to remain united with each other: it is related to the strong and weak nuclear forces, which keep the neutrons and protons together in the nucleus and the electrons orbiting around.
  • Potential energy . It is the energy that is contained in a physical system or an object in a given situation and can then be transformed into other forms of energy, such as kinetics.
  • Internal energy . It is the sum of the energy of the elements that make up a system.
  • Hydraulic power . It is derived from harnessing the kinetic energy of rivers , tides and falling water .
  • Light energy . It is linked to perceptible light and the objects and reactions that produce it.
  • Sound energy . It is the energy associated with sounds .
  • Geothermal energy . It is the energy obtained from the use of the internal heat of the planet , which is transmitted through layers of rock and hot minerals by conduction and convection processes.

Laws of energy

Laws of energy
Energy is neither created nor destroyed, it is transformed or transmitted.

According to physics, the energy in the universe is governed based on the following principles or laws, known as the three Laws of thermodynamics :

  • Universal law of conservation of energy . It establishes that energy can neither be created nor destroyed since it remains unchanged in the universe : it can only be transformed into another, but it cannot be extinguished or created from nothing.
  • Law of entropy . It establishes that the degree of disorder in the universe tends to increase with time , that is, that every isolated system tends gradually to disorder. This means, among other things, that energy in the form of heat can never flow from a cold body to a warmer one.
  • Third Law or ‘Nernst Postulate’ . It states that once absolute zero (0 ° K) is reached, all physical processes stop and the entropy (degree of disorder) reaches a constant and stable value.

Energy storage

Energy storage
Electrical energy can be stored in batteries or cells.

Energy can be stored in various ways by:

  • Accumulation of elements of high potential energy . The hydrocarbons or combustibles, once exposed to the oxygen release significant amounts of energy.
  • Storage in cells and batteries (electrical energy) . In these elements energy can be stored due to the arrangement of their electrically charged molecules in usable energy fields.
  • Natural deposits of glucose and fat . In living beings, energy is stored in the form of glucose and fat , a source of energy for the animal body.

Energy transformations

Energy transformations
Heat transmissions involve increasing or decreasing the temperature of an object.

Energy induces two types of transformations in the objects that interact with it:

  • Mechanical transformations . They have to do with the shape of objects and their physical variations such as expansion, deformation, etc.
  • Thermal transformations . They involve the increase in temperature of an object that receives an energy charge, as occurs with objects after much friction or left in the sun.

Energy degradation

Although energy is not destroyed or created, it is degraded, that is, in all energy transmission a percentage is lost (100% is never transmitted) by degrading into heat energy in the process.

Use of energy

Use of energy
Through the phenomenon of electricity, electrical energy is transformed, for example, into light.

Energy transformations can be used for the benefit of living beings and especially humanity, to the extent that it can be transmitted and propagated, even focused or concentrated, allowing the generation of significant amounts of movement, heat and work.

Machines, in fact, are an example of how to transform electricity into other forms of energy (mechanical, light, etc.).

Energy Measurement Units

Energy can be measured in different units, according to the type in question, but the joule (j) is accepted as the fundamental unit .

One joule is equal to the amount of work done by a 1-newton force to displace an object by 1 meter.

Other possible units are: calorie (cal), frigory (fg), therm (th), kilowatt (kW), British Thermal Unit (BTU), electron volt (eV), horsepower per hour (CVh).

Energy sources

Energy sources
Converters use different types of energy and convert it into electrical energy.

“Sources of energy” are considered to be those human devices that allow transforming energy of various kinds into electrical energy to supply human communities .

They are not really “sources” but rather large converters that take advantage of wind, nuclear, chemical or hydraulic energy, etc.

Examples of energy

There are numerous examples of energy on a day-to-day basis. From the chemical energy of batteries, which allows us to turn on a flashlight (and generate light energy), or the chemical energy contained in the food we consume to be able to move (mechanical energy) or that we perceive when we try to stop a moving object (energy kinetics).

Check Out Our Guides To Other Popular Topics

  • The metaphor is a literary figure that exposes a relationship of similarity between two terms so that their concepts can be interchanged. Know the basic examples of metaphor.
  • Did you know that you can use Google Authenticator on your Windows PC through other means? Let’s explore the ways you can use Google Authenticator on PC.
  • Be Familiar with characteristics of digital media and journalism, its history and its impact on society. Also learn about its history, features and examples.
  • The formal and factual sciences analyze real objects in ideal environments, and ideal objects in formal settings (such as emotions in the human mind). Learn about its definition, features and characteristics with examples.
  • Philosophy is a very old discipline, from which almost all knowledge comes directly or indirectly, from the humanistic to the most objective, from mathematics to literary criticism. Learn about Top 10 Characteristics of a Philosophy, History, Definition, Features and Examples.
  • The letters can be formal or informal according to their function and the relationship that exists between the sender and the receiver. Know about the characteristics of formal and informal letter, its differences, elements, and features.
  • There are different types of journalistic texts, among which notes, interviews, opinion columns, chronicles , reviews and reports stand out , and deal with various topics in areas such as politics, economy, society, culture, tourism, among others. Learn more about them.
  • Jesus (also known as Jesus of Nazareth or Jesus Christ) is one of the most influential figures in Western culture and a central axis of Christianity. Learn about Top 10 Characteristics of Jesus, his miracles, preaching, love and more.
  • Computer viruses are programs or software intended to execute actions on our computers without our authorization. Know about Top 10 Characteristics of Computer Virus, types, elements, and features.
  • We explain and summarize the history of television and how it evolved. Also, what are its characteristics and its golden age.
  • Be aware of what basic needs are and how they are classified. Also, what are its characteristics and Maslow’s Pyramid.
  • Know in detail what Buddhism is and how this religion originated. Also, what are its characteristics, philosophical principles and symbols.
  • Know everything about England, how is its climate and the flora and fauna of this country.
  • Know in detail what is Google Docs and what this service is for. Also, how to create a document in Google Docs and differences with Google Drive.
  • A detailed overview on the federal government, its advantages and disadvantages. Also, its general characteristics and features.
  • See in detail What is Hurricane Patricia, how long it lasted and the areas affected. Its general characteristics and types.
  • Be familiar with Jewish culture, know how it was originated and what its characteristics are. Also, their customs, prohibitions and more.

The above content published at Collaborative Research Group is for informational and educational purposes only and has been developed by referring reliable sources and recommendations from technology experts. We do not have any contact with official entities nor do we intend to replace the information that they emit.

Related Posts

Leave a Reply

Your email address will not be published.