Energy can be defined in simple words as an ability of an object or a system to do work on another object or system. Energy can be transferred from one object or system to another through the interaction of forces between the objects. Energy is never created newly or destroyed. There are multiple forms of energy. The two main types of energy are Kinetic energy and Potential energy and other types of energy are thermal energy, magnetic energy, sound energy, light energy, chemical energy, mechanical energy, electrical energy, nuclear energy, elastic energy. Energy can be converted from any one of these forms into any other. Each type of energy can be studied as a whole subject so here we will be looking at the basics of every type of energy. So let’s start.
Types of Energy: Kinetic Energy
Kinetic energy is the energy a moving object possesses. When an object moves with a certain speed then the kinetic energy is said to be working. A running person, a speeding car, released arrow, fired bullet all have the kinetic energy. It order to move means to make kinetic energy happen the object first should have the potential energy.
Types of Energy: Potential Energy
Potential energy is the energy associated with an object because of its position or structure. This type of energy is also called as stored energy. Potential energy when triggered transforms into kinetic energy. A bullet in the gun has the potential energy and when the trigger is pulled, potential energy transforms into kinetic energy and bullet is fired. Other examples of potential energy are the water in damn, arrow pulled on the bow, etc.
Types of Energy: Thermal/ Heat Energy
Thermal or heat energy is the internal energy present in a system due to its temperature. A hot glass of milk has the thermal energy and also collectively potential and kinetic energy at the same time at a microscopic level as the molecules in the milk are moving because of the kinetic energy and the potential energy as they attract each other.
Types of Energy: Electrical Energy
Everything is made up of atoms. Atoms are made of protons(positive charged), neutrons(neutral) and electrons(negative charged). The atom has the centre called Nucleus which is made up of Protons and Neutrons. The electrons revolve around the nucleus in fixed orbits. When an electric field to an object the electrons start to move from atom to atom and they also repel each other as like charged particles repel each other. The energy is really transferred by the repulsive nature of the electrons rather than the transfer of electrons by themselves. The electric energy is present when an object comes into the electric field.
Types of Energy: Chemical Energy
When a chemical reaction takes place the chemical energy is transformed into other forms of energy. At microscopic level chemical energy is collectively the potential and electric energy as the chemical reaction takes place by the displacement of charged particles like electrons. For example, when we eat food the chemical energy converts it into mechanical energy which is used by our muscles.
Types of Energy: Nuclear Energy
Nuclear energy takes place when the there are changes in the structure of the nucleus of atoms. The Sun, nuclear reactors, and the interior of the Earth, all have “nuclear reactions” as the source of their energy. In a nuclear reactor, or in the interior of the Earth, Uranium nuclei split apart. If this didn’t happen, the Earth’s interior would have long gone cold.
Types of Energy: Sound Energy
The Sound is produced when a force causes an object or substance to vibrate hence the energy is transferred through the substance in a wave. Sound is the movement of energy through substances in longitudinal waves. Sound vibrations create sound waves which move through mediums such as air and water before reaching our ears. Sound energy is usually measured by its pressure and intensity, in units called pascals and decibels.
Reference: Wiki Energy