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Electricity and Magnetism Ch 1
Vocabulary terms from ch 1
17
Science
6th Grade
02/21/2011

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Term
solenoid
Definition
a current-carrying coil of wire with many loops
Term
conductor
Definition
a material through which an electric current can more freely
Term
electric current
Definition
the amount of charge that passes through a material in a given amount of time
Term
resistor
Definition
a device that interferes with the flow of an electric charge
Term
superconductor
Definition
a material that has no electrical resistance
Term
insulator
Definition
a material through which charges cannot flow
Term
electric circuit
Definition
a complete path through which electric charges can flow
Term
resistance
Definition
the opposition to the movement of charges flowing through a material
Term
compass
Definition
a device that has a magnetized needle that can spin freely
Term
magnetic declination
Definition
the angle between geographic north pole and the magnetic north pole
Term
aurora
Definition
a glowing region caused by charged particles from the sun
Term
How can you increase the strength of an electromagnet?
Definition
Add more loops; wind the loops closer together; use a stronger ferromagnetic core
Term
magnetic field lines
Definition
a force around a magnet
Term
magnetic domain
Definition
magnetic fields that are all lined up in the same way
Term
magnetosphere
Definition
the region of Earth's magnetic field confined by the solar wind
Term
solar wind
Definition
a stream of electrically charged particles flowing at high speeds from the sun
Term
electromagnet
Definition
a solenoid with a ferromagnetic core
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