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24 Cards in this Set

  • Front
  • Back
Magnetic oxide of iron
Fe3O4
Lodestone
Helped find water
natural occurring magnet
used as a compass by Chinese
Lodestone
SI Unit of magnetic field strength
Tesla
Any charged particle in motion creates..
a magnetic field
The magentic field of a charged particle (such as an electron in motion) is .... to the motion of the particle.
Perpendicular
Electrons behave as if they rotate on an axis, either clockwise or counter clockwise. Rotation creates and electron spin which creates a .....
Magnetic field
the proton in a hydrogen nucleus spins on its axis and creates a "...." (the basis of MRI)
Magnetic Moment
ability of a material to attract the lines of the magnetic field intensity.
Magnetic Permeability
Natural
Artificial permanent
Electromagnets
Classification of Magnets
Magnets are classified according to the origin of the
Magnetic Property
Usually made of iron,
typically produced by aligning the domains in the field of an electromagnet
Permanent Magnets
Consists of wire wrapped around an iron core. When electric current is conducted through the wire, a magnetic field is created.
Electromagnets
All mtter can be classfied according to the manner in which it interacts with an ...
External Magnetic Field
Ferromagnetic
Paramagnetic
Diamagnetic
Nonmagnetic
Classification of Materials
Unaffected by magnetic field
material: wood, glass
Nonmagnetic
Weakly repelled from both poles of a magnetic field,
Material: Water
Diamagnetic
Weakly attracted to both poes of a magnetic field,
Material: Gadolinium
Paramagnetic
Can be strongly magnetized
Material: Iron, nicklel, Cobalt
Ferromagnetic
Dividing a magnet will ...
create two smaller magnets
Ends are called poles (north and south) compared to ....
negative and positive charges
Like poles of a magnet ..., unlike poles ...
Repel; Attract
Materials can be made magnetic one from another by ...
Induction
Magnetic force is inversely proportional to ....
the square of distance between the objects under consideration.
If the distance between two bar magnets is halved, the magnetic force ...
increases by four times.