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7th Grade N2 Vocab

Science Explorer Book N Ch 2 Vocabulary

TermDefinition
Electric force The attraction or repulsion between electric charges
Electric field The region around a charged object where the object's electric force interacts with other charged objects
Static electricity a buildup of charges on an object
Law of conservation of charge The law that states that charges are neither created nor destroyed but only transferred from one material to another
induction A method of charging an object by means of the electric field of another object; the objects have no direct contact
Static discharge The loss of static electricity as electric charges transfer from one object to another
Voltage The difference in electrical potential energy between two places in a circuit
Voltage source device that creates an electrical potential energy difference in an electric circuit. Example: batteries and generators
Resistance The measurement of how difficult it is for charges to flow through a material
Electrochemical cell A device that transforms chemical energy into electrical energy
Wet cell an electrochemical cell in which the electrolyte is a liquid
Dry cell An electrochemical cell in which the electrolyte is a paste
Electrode A metal part of an electrochemical cell, which gains or loses electrons
Electrolyte A liquid or paste that conducts electric current
Ohm's law the law that stated that resistance is equal to voltage divided by current R=V
Short circuit A connection that allows current to take an unintended path
Grounded Allowing charges to flow directly from the circuit into Earth in the event of a short circuit
Created by: DawnSimpson