Magnetic Domain: A group of atoms with aligned N-poles.
Magnet Poles: Magnets have both N-pole and S-pole. Like poles repel; unlike poles attract.
Magnetic Materials: Attracted to magnets and other magnetic materials.
Magnetic Field: Region around a magnet where it attracts opposite poles. Field lines go from N-pole to S-pole.
Magnetic Shielding: Making a space free from magnetic fields.
Induced Magnetism: Magnetizing a material with an external magnetic field.
Temporary Magnets: Magnets that behave like a magnet only in the presence of current.
Permanent Magnets: Magnets that retain their magnetic properties without current.
Diamagnetic Materials: Materials with zero net magnetic fields per atom.
Paramagnetic Materials: Materials with a small net magnetic field per atom.
Ferromagnetic Materials: Materials with a large net magnetic field per atom.
Earth's Magnetic Field: Resembles a bar magnet's field, protecting life from cosmic rays and solar radiation. Earth's geographic and magnetic poles differ by 11.3 degrees, and migratory animals use Earth's magnetic field for navigation.