Energy: Its Definition, and Types of Energy

Energy is a term that does not survive our use at least once a day. Do you really know what energy is and different types of energy? Even when we know what they are, it can provoke us to present them wisely and acceptably. Therefore, we help you understand and present it crisply as to what is energy and what are the different types.


What is Energy?

Energy, in physics, the capacity for doing work. It may exist in potential, kinetic, thermal, electrical, chemical, nuclear, or other various forms. There are, moreover, heat and work i.e., energy in the process of transfer from one body to another.

After transferring it, the energy always names according to its nature. Therefore, the transfer heat can convert into thermal energy, after the work is done may appear as mechanical energy.

All forms of energy associated with motion. For example, anybody has kinetic energy when it is in motion. A straining device such as a bow or spring, although at rest, has the ability to create motion; It has potential energy due to its configuration. Similarly, nuclear energy is potential energy because it arises from the configuration of subatomic particles in the nucleus of an atom.

Energy can neither create nor destroyed but can only transform from one form to another. This principle knows as the first law of conservation of energy or thermodynamics. For example, when a box slides down a hill, the potential energy that results from being high on the slope of the box convert to kinetic energy, the energy of motion. As the box closes through friction, the kinetic energy at the speed of the box converted into thermal energy that heats the box and the slope.

Energy Convert

Energy can convert from one form to another in various other ways. Mechanical or electrical energy, for example, produced by a variety of devices, including fuel-burning heat engines, generators, batteries, fuel cells, and magnetohydrodynamic systems.

In the International System of Units (SI), the energy measured in joules. A joule is equal to the work done by a Newton force acting at a distance of one meter.

Energy treated in many articles. For the development of the concept of energy and the principle of energy conservation, see Principles of Physics; Mechanics; Thermodynamics; And conservation of energy. For major sources of energy and the mechanisms by which energy transitioned from one form to another, see Coal; solar energy; Wind power; nuclear fission; oil shale; Petroleum; Electrical; And energy conversion.

Different Types of Energy

Many types of energy exist, but they all fall into two basic types of energy:

  • Kinetic energy
  • Potential energy

Kinetic Energy

All moving objects have kinetic energy. Kinetic energy is the energy an object has because of its motion. It can define as the work needed to accelerate a body from rest to its current velocity. Kinetic energy depends on the mass of the object. When the velocity or the mass of a body increases, the kinetic energy also increases. The kinetic energy can be either zero or positive. Some of the examples of kinetic energy are moving cars, moving the ball, the river flowing, an athlete running, and a satellite revolving in an orbit.

Radiant Energy

Radiant energy is electromagnetic energy that travels in transverse waves. Electromagnetic energy is a type of energy in which energy emitted through electrical or magnetic waves travelling through space. These waves do not require a medium and travel through empty space at the speed of light. It has vibrations of both electricity and magnetism. Some of the examples of electromagnetic waves are X-rays, microwave. Radio, gamma rays and ultraviolet rays are examples of electromagnetic waves.

Thermal Energy

Thermal energy is also known as Heat energy. This is a type of energy in which the object gets energy due to the movement of the molecules within the object. As the movement of these molecules becomes faster, more heat produced. Heat energy on Earth is from the sun above. This energy can transfer only by convection, conduction, and radiation. It is difficult to convert heat energy into other forms. Some of the examples of heat are gas stove burners, a hot cup of coffee and when u rub your hand together, heat energy produced.

Motion Energy

Motion energy is energy stored in the movement of objects. The faster they move; the more energy stored. It takes energy to make an object moving, and energy released when an object slows down. The wind is an example of motion energy. A dramatic example of motion energy is a car crash—a car comes to a total stop and releases all of its motion energy at once in an uncontrolled instant.

Sound Energy

The sound energy is a type of energy in which associated with the matter vibrations. Sound energy needs a medium to travel and produces low levels of energy. Due to this property of sound, there is no sound in space.  The measurement of these waves depends upon its intensity and pressure. Sound travels fastest through a liquid. Sound of vehicles, wind chimes, laughing, crying, water falling, boiling, whistles, guitar all are examples of sound energy.

Electric Energy

Electric energy is a type of energy due to the movement of electric charge and can be commonly called electricity. The origin is from electromagnetic forces. When this electrical energy flows, a little bit of heat energy generated. Electric heaters, appliances, lights, fans, television, and all use electrical energy.

Potential Energy

Potential energy is a type of energy possessed by an object due to its virtue or position. In simpler terms, potential energy is something that is present but does not do any work. It is the stored energy and can convert to kinetic energy. Some of the examples of potential energy are holding a pen up, car on a hilltop, a stretched rubber band, a glass of milk, and fruit hanging from a tree.

Chemical Energy

Chemical energy is a type of energy store in chemical compounds and release during a chemical reaction. In most of these reactions, heat energy is the byproduct. Chemical energy is the most common form of energy. It comes in different forms and can constantly change its form. The food that we eat, all battery-powered devices, combustion of oil, fuel, and gas and electricity are some of the examples of chemical energy.

Mechanical Energy

The mechanical energy is the sum of the kinetic energy, or energy of motion, and the potential energy, or energy stored in a system by reason of the position of its parts. Mechanical energy is constant in a system that has only gravitational forces or in an otherwise idealized system that is, one lacking dissipative force, such as friction and air resistance, or one in which such forces can be reasonably neglected.

Nuclear Energy

Nuclear energy is a type of energy inside the atom in the nucleus. Each object around us is made up of an atom. There is a lot of energy in these atoms. On certain grounds, these atoms release energy which can be harmful and useful to mankind. This energy can be used to generate electricity, boil water to create steam and even explode a nuclear bomb.

Atomic Energy

Atomic Energy is produced when you split atoms. A tremendous amount of energy is released when this happens. Atomic bombs, nuclear power plants, nuclear submarines, and the sun are some of the examples of Atomic Energy.

Gravitational Energy

Gravitational energy is a type of energy possessed by an object when it is moved against gravity. This is mainly caused due to the pull of gravity. The higher the object, the higher the gravitational energy. The force of gravity of an object depends upon the mass of the object. Some of the examples of gravitational energy are water stored in a dam, rocks at the top of a hill, and a parachute.

Solar Energy

Solar energy is the energy that is received from the sun. It is the most abundant and the most renewable form of energy. If the entire populations efficiently use this solar energy for all purposes no other form of energy needs to be utilized. It is a free source of heat and light energy. Solar panels, cells, torches, lights, fans, solar farms, and solar stations are some of the variations that use the sun as their medium.

Magnetic Energy

Magnetic energy is a type of energy stored in the magnetic fields in magnets. All magnets are examples of magnetic energy.

Surface Energy

Surface energy is a type of energy that is present by virtue of existence. This types of energy is present in a stretched rubber band, stagnant water, etc. in simple terms when 2 liquids come in contact with each other, surface tension is created. This is the surface energy. Usually, in solids, surface energy combines with elastic energy. If an insect floats on the water then it is because of the surface energy.

Wind Energy

Wind energy is the energy of the winds. This is a green, renewable, and affordable source of energy that is utilizing for a long period of time. Wind energy utilized in the form of windmill and turbines which convert the kinetic energy of the wind into mechanical energy and further into electric energy.

Energy comes in six basic forms: chemical, electrical, radiant, mechanical, thermal and nuclear. In other research, you may find additional forms mentioned such as electrochemical, sound, electromagnetic and others. However, many additional forms are combinations of these six basic categories.

For the potential energy the formula is. P.E. = mgh. Unit. The SI unit of energy is joules (J), which is named in honor of James Prescott Joule.

work is a transfer of energy. So 1 joule of energy transferred from one place to another is 1 joule of work done.

Energy, in physics, the capacity for doing work. It may exist in potential, kinetic, thermal, electrical, chemical, nuclear, or other various forms. There are, moreover, heat and work i.e., energy in the process of transfer from one body to another.

By 1686, Gottfried Wilhelm von Leibniz (1646 − 1716), had developed concepts that correspond to our current understanding of kinetic and potential mechanical energy. Energy cannot be created or destroyed; it can only be transformed from one form to another.

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