How Heat Is The Heat Source For Our World

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Our planet is powered by the sun, which serves as the main heat source for our world. It is from the sun that energy is transferred “through space and through the earth 's atmosphere to the earth 's surface” (“The Transfer of Heat Energy”, n.d.). When energy begins to warm our planet’s atmosphere and surface, some of that energy is considered to be heat energy. Specifically, there are three different methods in which our world uses to transfer heat into and throughout the atmosphere; these methods include conduction, convection, and radiation. Heat is considered to be thermal energy, and thus is able to be transferred from one place to another via conduction, convection, and radiation. It is important to note that “conduction and…show more content…
The process of conduction can best be understood when it’s broken down into basic chemistry terminology. “The electrons in piece of metal can leave their atoms and move about in the metal as free electrons” (BBC, n.d.). An electron is a negatively charged subatomic particle; free electrons are not bound to the nucleus of an atom, therefore it is not attached to the atom at all. After the electrons in a piece of metal become unattached to their atoms and start to move around as free electrons, “the parts of the metal atoms left behind are now charged metal ions” (BBC, n.d.). An ion is defined as an atom or molecule that either loses or gains one or more electrons, thus leaving the ion with a net electric charge. Once the metal ions are the only part of the metal atom left behind, the ions are then crowded closely together as they begin to vibrate incessantly; the more kinetic energy these ion vibrations have, the hotter the metal becomes. Kinetic energy is simply the energy that arises when something is in motion. The kinetic energy given off by the vibrating ions is transferred from the “hot parts of the metal to cooler parts by the free electrons; these move through the structure of the metal, colliding with ions as they go” (BBS, n.d.). Substances like non-metals and gases are typically very poor heat conductors; substances that are “poor conductors of heat
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