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Types of Energy

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by

Leanne Hilkowski

on 2 October 2013

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Transcript of Types of Energy

Types of Energy
Mechanical
Mechanical Energy is the most familiar form of energy. It is the energy a substance or system has because of its motion. Every moving object has mechanical energy, whether it is a hammer driving a nail, a leaf falling from a tree, or a rocket flying in space. Mechanical energy pulls, pushes, twists, turns and throws.

Machines use mechanical energy to do work. Our bodies also use mechanical energy to perform motions such as throwing a ball or moving a pencil to write on paper

Mechanical Energy can be separated into Potential or Kinetic Energy.
Thermal
Thermal energy is the energy a substance or system has related to its temperature, i.e., the energy of moving or vibrating molecules.

We use thermal energy to cook our food and heat our homes, and we use it to generate electricity.
Thermal energy is not the same as heat. Heat is energy transferred between substances or systems due to a temperature difference between them. So it is correct to say that a system contains thermal energy, but not that it "contains" heat, since heat means energy that is transferred from one thing to another.
Chemical
Energy stored within the bonds between molecules. The most common examples of chemical energy are fuels such as gasoline, coal, and natural gas.
Electrical
Electrical energy is the energy carried by moving electrons in an electric conductor. It cannot be seen, but it is one of our most useful forms of energy because it is relatively easy to transmit and use.
Electromagnetic
Electromagnetic energy is familiar to most people as light and heat, but it can take many other forms, such as radio waves and X-rays. These are all types of radiation originating from the electromagnetic force, which is responsible for all electrical and magnetic phenomena. The radiation travels at the speed of light in a manner resembling waves.
Electrical generating plants do not create energy. They change other forms of energy into electricity. For example, power plants can convert chemical energy stored in fuels into thermal energy, which evaporates water into steam, which produces mechanical energy as it moves through turbines. The turbines spin generators, which produce electricity.
Nuclear
A release of nuclear energy occurs when the nuclei of atoms are changed. Hydrogen and uranium are two kinds of matter used to produce nuclear energy. In a nuclear reaction, the tremendous binding energy inside a hydrogen or uranium nucleus is released.
Nuclear energy is released during atomic fission, when uranium nuclei are split. It is also released during fusion, when hydrogen nuclei combine to form a helium nucleus.
http://www.glencoe.com/sites/common_assets/science/virtual_labs/E04/E04.html
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