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definitions chap. 8


energy: The ability to do work.
potential energy: The energy of a system due to its position or condition.
kinetic energy: The energy of motion that depends only on the system's mass and speed.
mechanical energy: The energy resulting from the motion of matter or its position relative to an external force acting on it, kinetic and potential energy.
thermal energy: The average sum of the kinetic energies of all the particles in an object. Directly proportional to the temperature of the object.
acoustic energy: The transmission of energy through matter by the periodic longitudinal motion of particles.
electrical energy: The ability to do work through the action of the electromagnetic force or by electrical charges.
magnetic energy: The ability of a magnetic field to do work on magnetic objects and moving electrical charges.
electromagnetic/radiant energy: The combined action of electrical and magnetic energies in the form of wave like, radiant energy.
chemical energy: The potential energy stored in the chemical bonds between atoms that is released or absorbed during chemical reactions.
nuclear energy: The potential energy stored in an atom's nucleus, that is released or absorbed when an atom experiences nuclear fission or fusion.
mass energy: The energy equivalent to matter itself according to the equation in Einstein;s special theory of relativity, E=mc2.
efficiency: For a machine or process, the ratio energy or work produced to the energy or work that was put into the machine or process.
first law of thermodynamics: Energy, and matter cannot be created or destroyed, only charged in form.
momentum: A property of a moving system that is proportional to its speed and mass.
conversation of momentum: A fundamental natural conservation law.
Created by: yoceli