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28 Cards in this Set

  • Front
  • Back
What are protons?
a positively charged particle found in the nucleus of an atom
What are neutrons?
a particle with no charge that is found in the nucleus of an atom.
What are electrons?
a negatively charged particle found OUTSIDE of atoms
What is nucleus?
the central core of an atom that contains protons and neutrons and that account for most of the mass of the atom
What is a circuit?
a continuous path for the flow of electrons
What is static electricity?
electric charge at rest; generally produced by friction or induction
What is an atom?
the smallest particle into which an element may be divided and still be the same substance
What is a dry cell?
(battery) a type of chemical cell in which the electrolytes are a paste rather than a liquid
What is a wet cell?
a type of chemical cell that uses a liquid electrolyte (water in a cup, lemon)
What are volts?
unit of the PUSH of a current
What are amperes? (amps)
unit for electric current
What is electric force?
the FORCE of attraction or repulsion on a charged particle that is due to an electric field
What is an electric field?
the SPACE around a charged object that causes another charged object to experience an electric force
What are watts?
Volts + Amps
What is an electrolyte?
a substance that conducts electricity, usually dissolved in water or some other solvent.
What is a battery?
a group of connected chemical cells that convert chemical energy into electrical energy to produce an electric current
What is a thermocouple?
Converts heat energy into electrical energy
What is energy?
the capacity to do work
What is an electromagnet?
magnets created by flowing electric currents
What is a friction?
when electrons are "wiped" from one object onto another
What is conduction?
when electrons MOVE from one object to another by DIRECT CONTACT
What is induction?
when charges in an UNCHARGED metal object are REARRANGED WITHOUT direct contact with a charged object
What is a fuse?
a safety device containing a strip of metal that melts when too much current passes through a circuit containing the device
What is an electrode?
a terminal that conducts electrons into or away from the electrolyte in a battery
What is a galvanometer?
an instrument that measures small amounts of electric current
What is a circuit breaker?
a switch that automatically interrupts a electric circuit under abnormal conditions.
What is a alkaline battery?
a long-lived dry cell that has a basic electrolyte which decreases the corrosion of the cell
What is a resistor?
a device placed in an electric circuit to provide resistance