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Physical Science-LW

Miss DiVito’s 7th grade end of the year review

TermDefinition
Kinetic Energy Energy in an object has because of its motion.
Mechanical Energy The energy that an object has because of its motion or its position
Model A representation of a system, object or concept.
Potential Energy stored energy
System A set of parts that are connected is connected in some way
Circuit The complete loop through which an electoral current can pass
Current a steady flow of electrons
Electrical Energy Energy from interactions between charged partials
Electricity The presence or movement of charged particles called electrons
Energy The ability to do work
Energy Transfer When one form of energy is changed from one form to another
Force A push or pull
Green Energy Energy that comes from sources that do not pollute the earth
Primary Energy Energy sources found in nature
Secondary Energy Energy that has been transformed from one another source
Simple Machines Makes work easier for us by allowing us to push or pull over increased distances
Mechanical Advantage The difference between the applied force and the work accomplished
Mechanical Efficency The effectiveness of the machine's performance
Created by: 19larry.williams
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