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60 Cards in this Set
- Front
- Back
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electric charge |
a condition produced by electricity |
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electric current |
a flow of electric charge |
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electrocuted |
killed by an electric current |
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insulator |
a material that electricity cannot go through |
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conductor |
a material that electricity can go through very well |
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switch |
something that turns electric current on and off |
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toggle |
a kind of switch that is used for lights in a home |
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knife switch |
a kind of switch that used for doing experiments |
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pushbutton switch |
a kind of switch that is used for doorbells |
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electron |
a tiny bit of negative electricity |
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electric charge |
the kind of electricity; it can be positive or negative |
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repel |
push away |
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electrode |
the negative or positive part of an electrical cell |
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electrolyte |
a liquid or moist substance that can conduct electricity |
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wet cell |
an electrical cell that has a liquid electrolyte |
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dry cell |
an electrical cell that has a moist electrolyte |
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terminal |
the negative or positive end of an electrical cell |
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electric circuit |
the path that an electric current follows |
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closed circuit |
a complete path for electricity to move along |
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open circuit |
an incomplete path that electricity cannot move along |
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series circuit |
a circuit that has just one path for the electric current to follow |
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parallel circuit |
a circuit that has more than one path for the electricity to follow |
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ampere |
the unit for measuring electric current |
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ammeter |
an instrument for measuring electric current |
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electromotive force |
the push that makes electricity move |
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volt |
the unit for measuring electromotive force |
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voltage |
the number of volts |
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battery |
two or more electrical cells connected together |
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voltmeter |
an instrument for measuring electromotive force |
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oppose |
try to stop |
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resistance |
a measure of how easy or hard it is for electric current to move through a material |
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nichrome |
a high-resistance metal used to make wires for toasters |
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tungsten |
a high-resistance metal used to make wires for light bulbs |
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superconductor |
a material that loses all its resistance when it is very cold |
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ohm |
the unit of resistance |
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predict |
tell what will happen |
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short circuit |
a short electrical path that has very low resistance |
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poles |
the ends of a magnet |
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induced magnetism |
magnetism caused by touching or being near a magnet |
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magnetize |
make into a magnet |
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magnetic field |
the pattern of magnetism around a magnet |
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lines of force |
the lines that show a magnetic field |
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coil |
a wire wound up in many loops |
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turn |
one loop in a coil of wire |
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electromagnet |
a coil of wire that uses electricity to magnetism |
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core |
the material in the center of an electromagnet |
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galvanometer |
a tool for measuring very small electric currents |
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induced |
an electric current made by a moving magnetic firld |
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primary coil |
a coil that induces a current in anothercoil |
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secondary coil |
a coil in which current is induced |
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induction coil |
a primary and secondary coil working together |
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direct current |
electric current that moves in one direction only |
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alternating current |
electric current that keeps moving back and forth |
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transformer |
an induction coil that uses alternating current |
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friction |
rubbing |
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fuel |
material that is burned to produce heat energy |
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heat |
a form of energy that we can feel |
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conduction |
movement of heat energy by molecules bumping into each other |
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convection |
the way that heat travels through gases and liquids |
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convection currents |
up-and-down movements by gases or liquids caused by convection |
