What is Electricity?

　　Electricity is a form of energy found in nature. Moreover, it is also a secondary energy manufactured by humans to make our inventions work and wooden crafts for sale.

　　We have to learn about atoms to understand how electricity is formed. Atoms are some of the smallest units of matter. Everything is made up of atoms, including our bodies.

　　It all starts with atoms.

　　If you were able to look at an atom, it would look like a tiny solar system. The nucleus is in the middle. A cluster of particles called neutrons and protons make up the nucleus. Electrons orbit around them in “bubbles” or layers. The layer closest to the nucleus can hold up to two electrons. The next layer can hold up to eight electrons. The next layer can hold even more, and so on.

　　Each atom has the same number of protons and electrons. Protons and electrons are sort of like magnets. Protons have a positive charge and electrons have a negative charge. The two attract each other. (Neutrons have no charge.) However, electrons repel each other since they both have the same negative charge. They spend all their time spinning around in their bubble trying to stay away from each other.

　　The electrons in the bubble closest to the nucleus have a really strong attraction to the protons. Electrons in the outermost bubbles, though, have a much weaker attraction. Sometimes they are pushed out of their bubble to join another atom. These migrating electrons are what we call electricity.

　　Static electricity

　　Static electricity is found naturally in our environment. It is simply a type of energy that stays in one place for a short amount of time until it is released. An imbalance of positive and negative charges in an object produces static electricity. Lightning is a great example. Clouds move and push against each other during storms. This rubbing, or friction, causes extra electrons to develop. This negative charge then looks for a positive charge either in the ground or in another cloud. When it finds one, those electrons move toward the protons in a hot blast of energy.

　　Did you know that this static electricity display has many benefits for our planet? Lightning transfers negative charges back down to Earth. Normally, there is a steady flow of negatively-charged ions up from the Earth into the atmosphere. This transfer helps keep the two balanced.

　　Lightning also releases nitrogen from the atmosphere by knocking electrons away from the atom. The unstable atom then combines with other elements to form nitrates. Rainwater carries it down to Earth. These nitrates nourish the soil and plants then turn them into proteins.

　　Current electricity

　　Current electricity is different because it is the actual flow of electrons along a path. This current requires a conductor, usually a copper wire. We measure currents in amperes, or “amps.”

　　Scientists refer to this as a secondary energy because we generate it from other fuel sources, such as coal, wind, or even solar energy. We can’t mine current electricity. We have to make it from something else. And its invention changed the world and made the rate of technology development explode.

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