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4th grade chapter 9
Electricity and Magnetism
Term | Definition |
---|---|
insulator | a material through which an electric charge moves with difficulty |
static electricity | an excess of negative or positive charge in an object |
series circuit | a circuit in which electric charge can only flow in one circular path |
electric current | an electric charge in motion |
parallel circuit | a circuit that has 2 or more part through which electric charges may flow |
conductor | a material through which an electric charge can move easily |
generator | a machine that produces electric energy by turning coils of wire around powerful magnets |
filament | a thin, coiled wire that can get very hot without melting |
magnetism | a force that acts on moving electric charges and magnetic materials |
electromagnet | a magnet that only works when electricity is provided |