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Meaning: rapid chemical combination of a substance with oxygen, involving the production of heat and light.

Example: when wood burns, it must do so in the presence of O2 and a lot of heat is produced: Wood as well as many common items that combust are organic (i.e., they are made up of carbon, hydrogen and oxygen).

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Meaning: a natural fuel such as coal or gas, formed in the geological past from the remains of living organisms.

Example: coal, oil and natural gas. Coal is a solid fossil fuels formed over millions of years by decay of land vegetation.

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Meaning: a form of energy that is reflected or emitted from objects in the form of electrical and magnetic waves that can travel through space.

Formula:  E = hν, where E is the energy per photon, ν is the frequency of the photon, and h is Planck's constant.

Example: gamma rays, x rays, ultraviolet radiation, visible light, infrared radiation, microwaves and radio waves.

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Meaning: There are two fundamental nuclear processes considered for energy production: fission and fusion. Fission is the energetic splitting of large atoms such as Uranium or Plutonium into two smaller atoms, called fission products.

Example: Examples of Nuclear Energy: 1. A fission reaction at nuclear power plant provides enough energy to give electricity to large cities

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Meaning: Energy stored in the bonds of chemical compounds. Chemical energy may be released during chemical reaction, often in the form of heat; such reactions are called exothermic.

Example: coal - combustion reaction converts chemical energy into light and heat. wood - combustion reaction converts chemical energy into light and heat. petroleum - can be burned to release light and heat or changed into another form of chemical energy, such as gasoline.

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Meaning: is the energy newly derived from electric potential energy or kinetic energy

Formula:  P = E ⁄ t where power P is in watts, Power P = work / time (W ⁄ t). Energy E is in joules, and time t is in seconds.

Example:

Lightning.

Electrical charges moving through a wire or electricity.

Static electricity.

Batteries in use.

Electricity stored in capacitors.

Electric eels generate electrical energy.

Doorbells.

Audio speakers.

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Meaning: refers to the internal energy present in a system due to its temperature

Formula: you can see from the imagine below

Example: Thermal energy is an example of kinetic energy, as it is due to the motion of particles, with motion being the key.

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Meaning: In the physical sciences, mechanical energy is the sum of potential energy and kinetic energy. It is the energy associated with the motion and position of an object.

Formula: Kinetic energy+potential energy=mechanical energy

Example: a brick held at a vertical position above the ground or zero height position

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Meaning: the energy of interacting bodies or particles in a closed system remains constant

Example: when a pendulum swings upward, kinetic energy is converted to potential energy. When the pendulum stops briefly at the top of its swing, the kinetic energy is zero, and all the energy of the system is in potential energy. When the pendulum swings back down, the potential energy is converted back into kinetic energy. At all times, the sum of potential and kinetic energy is constant.

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Meaning: matter is any substance that has mass and takes up space by having volume. This includes atoms and anything made up of these, but not other energy phenomena or waves such as light or sound.

Example: According to modern physics, matter consists of various types of particles, each with mass and size. The most familiar examples of material particles are the electron, the proton, and the neutron.

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Meaning: The change of energy from one form to another. Energy transformations occur everywhere every second of the day.

Example: There are many different forms of energy such as electrical, thermal, nuclear, mechanical, electromagnetic, sound, and chemical.

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Meaning: Elastic potential energy is Potential energy stored as a result of deformation of an elastic object, such as the stretching of a spring.

Formula: PE=spring constant•spring displacement

Example: Elastic potential energy can be stored in rubber bands, bungee chords, trampolines, springs, an arrow drawn into a bow, etc.

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Meaning: Gravitational potential energy is the energy an object has due to its position above Earth, energy due to its height

Formula: GPE=Mass•Gravity•height
mass in kilograms
gravity (9.8 on Earth)
height above the ground in meters

Example: a pen being held above a table has a higher gravitational potential than a pen sitting on the table.

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Meaning: Stored energy that increases or decreases depending on the object's position and condition. There is two types of Potential Energy.

Formula: PE=Mass•acceleration due to gravity•height
mass in kilograms
acceleration due to gravity (9.8 m / s² at the surface of the earth)
height in meters

Example: The heavy ball of a demolition machine is storing energy when it is held at an elevated position. This stored energy of position is referred to as potential energy.

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Meaning: Is the energy that an object has because of it's motion. The amount of kinetic energy an object has depends on its mass and speed. Kinetic energy can be transferred from one object to another object when objects collide.

Formula: KE=1/2•mass•velocity^2.

Example: An airplane has a large amount of kinetic energy in flight due to its large mass and fast velocity.

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Meaning: The ability to cause change ( do work). It can be transferred and stored but can't be created or destroyed.

Two types of energy- potential energy and kinetic energy.

Example: light energy, heat energy, mechanical energy, gravitational energy, electrical energy, sound energy, chemical energy, nuclear or atomic energy and so on.