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FORMS OF ENERGY
Transcript of FORMS OF ENERGY
Think about the ability of your body to do work. The glucose (blood sugar) in your body has "chemical energy" because the glucose releases energy when chemically reacted with oxygen. Your muscles use this energy to generate mechanical force and also heat. The energy transmitted to the Earth from the Sun by light (or by any source of light).
Light Electrical All matter is made up of atoms, and atoms are made up of smaller particles, called protons (which have positive charge), neutrons (which have neutral charge), and electrons (which are negatively charged). Electrons orbit around the center, or nucleus, of atoms, just like the moon orbits the earth. The nucleus is made up of neutrons and protons.
Some material, particularly metals, have certain electrons that are only loosely attached to their atoms. They can easily be made to move from one atom to another if an electric field is applied to them. When those electrons move among the atoms of matter, a current of electricity is created.
Sound Sound waves are compression waves associated with the potential and kinetic energy of air molecules. When an object moves quickly, it compresses the air nearby, giving that air potential energy. That air then expands, transforming the potential energy into kinetic energy (moving air). The moving air then pushes on and compresses other air, and so on down the chain. A nice way to think of sound waves is as "shimmering air". Nuclear The Sun, nuclear reactors, and the interior of the Earth, all have "nuclear reactions" as the source of their energy, that is, reactions that involve changes in the structure of the nuclei of atoms. Matter itself is a form of energy!
This formula was discovered by Einstein. This formula means:
The energy intrinsically stored in a piece of matter at rest equals its mass times the speed of light squared.