Energy Notes | Eastern Kentucky University

University:
Eastern Kentucky University
Course:
PHY 131 | College Physics I
Academic year:

2023
Views:

437

Pages:

3
Author:

trescandogss

Energy Forms of Energy: There are many types of energy, both kinetic and potential. Listed below are some of the common types of energy (think C.E.M.E.N.T.): Chemical Energy: stored within the chemical bonds of an object; potential energy Electrical Energy: the movement of electrons through electric charges; kinetic energy Mechanical Energy: sum of potential energy and kinetic energy Electromagnetic/Radiant Energy: travels in the form of electromagnetic waves; kinetic energy Nuclear Energy: stored within the nucleus of an atom; released through fission or fusion; potential energy Thermal/Heat Energy: created by quickly-moving atoms inside an object; the faster the atoms move, the more thermal energy is created; kinetic energy Sources of Energy: Chemical Energy fossil fuels Electrical Energy lightning, generators, power outlets Mechanical Energy flying plane, wind, flowing water Electromagnetic/Radiant ultraviolet light lamps, x-rays Energy English: taken from en.wikipedia en:Image:ElectromagneticSpectrum.svg and en:Image:ElectromagneticSpectrum.png (deleted) Nuclear Energy sun, stars, nuclear weapons Thermal/Heat Energy objects melting or freezing Transfer of Energy: The Law of Conservation of Energy states that energy cannot be created nor destroyed. It says energy can only be transferred from one form to another and that the total amount of energy present before a reaction must equal the amount of energy left over after a reaction. Thermal/Heat Transfer: Thermal energy travels in three different ways... ❖ Conduction: energy transfer from warmer particles to cooler particles through direct contact ➢ EX: Touching a hot pan, ironing a shirt ❖ Convection: energy transfer through liquids or gases where the cooler particles move downwards and the warmer particles move upwards ➢ EX: water boiling in a pot, a radiator heating a room ❖ Radiation: energy transfer through electromagnetic waves ➢ EX: microwaves, heat lamps Movement in Convection