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PS Chapter 6:Energy

PS Chapter 6:Energy Coach Leach

TermDefinition
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.
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 (mechanical waves)
Electrical Energy The ability to do work through the action of the electromagnetic force on 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 wavelike, 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.
Efficiency For a machine or process, the ratio of energy or work produced to the energy or work that was put into the machine or process.
Conservation of Energy The total amount of energy entering a process equals the sum of all forms of energy that exist at the end of the process.
First Law of Thermodynamics Energy and matter cannot be created or destroyed, only changed in form.
Momentum A property of a moving system that is proportional to its speed and mass. Isaac Newton called it the quantity of motion.
Conservation of Momentum In a system of colliding objects, the sum of their momentums before the collision is equal to the sum of their momentums afterward if no external forces act on the objects.
Friction A contact force that cannot produce potential energy in an object.
Elastic Collision A collision between two objects in which the momentums and kinetic energies of the colliding objects are conserved.
Partially Elastic Collision A collision between two objects in which momentum is conserved but some of their kinetic energies is lost to other forms of energy during the collision. The objects are slightly or permanently deformed but rebound from the collision.
Inelastic Collision A collision between two objects in which the deformation is so severe that they stick together.
Created by: CoachLeach