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