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magnetism
terms and definitions
| Question | Answer |
|---|---|
| Dipolarity | polar molecules have a slight positive and slight negative charge |
| lodestone | a piece of magnetite or other naturally magnetized mineral, able to be used as a magnet. |
| north pole of magnet | the pole from which the magnetic field lines emerge from a magnet |
| south pole of magnet | the pole into which the magnetic field lines enter a magnet |
| dipolar | Having a pair of equal and opposite electrical charges |
| Monopoles | term for isolated north poles and south poles that might occur somewhere in nature |
| Magnetization | Process by which elementary magnetic domains of a material are aligned predominantly in one direction. |
| induction | process by which a material can be made into a magnet is known as magnetic ___ |
| Demagnetization | the loss of a magnet's magnetic force |
| temporary | a magnet made from a material that easily loses its magnetism |
| permalloy | the best material to make a magnet rapidly gain and rapidly lose magnetization; an alloy of nickel and iron in approximately a 3 to 1 ratio |
| permanent | A magnet made of material that keeps its magnetism |
| Alnico | a powerful permanent-magnet alloy containing iron, nickel, aluminum, and one or more of the elements cobalt, copper, and titanium. |
| Coulomb | the law which states that the electric force between charged objects depends on the distance between the objects and the magnitude of the charges. |
| magnetic fields | a region around a magnetic material or a moving electric charge within which the force of magnetism acts. |
| flux | indicate the direction and strength of the magnetic field are the lines of ____ |
| Permeability | the extent to which a material can absorb or channel lines of magnetic flux |
| moment | a measure of an object's tendency to align with a magnetic field is called the magnetic ____ |
| domain theory | our understanding of what makes a magnet work |
| domain | A region in which the magnetic fields of all atoms are lined up in the same direction is known as the magnetic _____ |
| saturation | when the spin action of all the unaired electrons point in the same direction |
| diamagnetic | all electrons are paired |
| paramagnetic | unpaired electrons |
| ferromagnetic | relating to matter with strong magnetic properties |
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