Electricity and Magnetism
Terms
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- compass
- a device with a magnetized needle that can spin freely
- Aurora
- a glowing region produced by the interaction of charged particles from the sun and atoms from the atmosphere
- electromagnet
- a solenoid with a ferromagnetic core that forms a magnet that can be turned on or off
- superconductor
- a material that has no electrical resistance
- electric circuit
- a complete path through a material
- insulator
- a material that does not easily transfer thermal energy as it interferes with the flow of electric current
- ferromagnetic material
- a material that is strongly attracted to a magnet, and which can be made into a magnet
- magnetic field
- the region around a magnet where the magnetic force is exerted
- resistor
- a device in an electric current that uses electrical energy as it interferes with the flow of electric current
- magnetism
- the force of attraction or repulsion of magnetic materials
- Van Allen Belts
- 2 doughnut-shaped regions 1,000-25,000 kilometers above Earth that contain electrons and protons traveling at high speeds
- permanent magnet
- a magnet made of a material that keeps its magnetism
- magnetic field lines
- the lines that map out the magnetic field around a magnet
- magnetic pole
- the ends of a magnetic object, where the magnetic force is strongest
- solenoid
- a current-carrying coil of wire with many loops that act as a magnet
- Magnetosphere
- the region of Earth's magnetic field shaped byt the solar wind
- magnetic domain
- a region in which the magnetic fields of all atoms are lined up in the same direction
- resistance
- the opposition of the movement of electric charges flowing through a material
- electric current
- the flow of electric charges through a current
- Solar Winds
- stream of electrically charged particles flowing at high speeds from the sun's corona
- magnetic declination
- the angle between geographic north and the north to which a compass needle points