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Science Vocab Ch. 1

Using Energy and Heat; Lessons 1 - 3

TermDefinition
Energy The ability to cause change.
Potential Energy Stored energy due to the interaction between objects or particles.
Chemical Energy The energy stored in and released from the bonds between atoms.
Nuclear Energy The energy stored in and released from the nucleus of an atom.
Kinetic Energy Energy due to motion.
Electric Energy The energy in an electric current.
Mechanical Energy The sum of the potential energy and the kinetic energy in a system.
Thermal Energy The sum of the kinetic energy and potential energy of the particles that make up the object.
Wave A disturbance that transfers energy from one place to another without transferring matter.
Sound Energy Energy carried by sound waves.
Radiant Energy The energy carried by electromagnetic waves.
Law of Conservation of Energy Says that energy can be transformed from one form to another, but it cannot be created or destroyed.
Energy Transfer When energy moves from one object to another without changing form.
Energy Transformation When one form of energy is converted to another form of energy.
Work The transfer of energy that occurs when a force makes an object move in the direction of the force. Work is only being done while the force is acting on the object.
Open System A system that exchanges matter or energy with the environment.
Closed System A system that does not exchange matter or energy with the environment.
Renewable Energy Resource An energy resource that is replaced as fast as, or faster than, it is used.
Nonrenewable Energy Resource An energy resource that is available in limited amounts or that is used faster that it can be replaced in nature.
Temperature The measure of the average kinetic energy of the particles in a material.
Heat The movement of thermal energy from a region of higher temperature to a region of lower temperature.
Conduction The transfer of thermal energy by collisions between particles in matter.
Radiation The transfer of thermal energy by electromagnetic waves.
Convection The transfer of thermal energy by the movement of the particles from one part of a material to another.
Vaporization The change of state from a liquid to a gas.
Thermal Conductor A material in which thermal energy moves quickly.
Thermal Insulator A material in which thermal energy moves slowly.
Created by: stemljos4017