Magnetism Model by Emily Brady

Magnets

ebrady38 — 2023-12-05 23:30:04 UTC

Every magnet (permanent or temporary) has a north pole and a south pole. Every magnet will react to another magnet or a ferromagnetic object.

If free to rotate, the north pole of a magnet will always point north within the Earth's magnetic field.

Ferromagnetic Object

ebrady38 — 2023-12-05 23:32:33 UTC

Ferromagnetic objects are unmagnetized and made from materials containing iron, nickel or cobalt. A ferromagnetic object is made up of magnetic domains. A ferromagnetic object will always react when in the presence of a magnet.

Law of Magnetic Poles

ebrady38 — 2023-12-05 23:34:20 UTC

Every magnet contains a north and a south pole. Like poles will repel and opposite poles will attract.

Magnetic Domains

ebrady38 — 2023-12-05 23:40:32 UTC

Magnetic domains exist within ferromagnetic objects. These domains act as tiny bar magnets, each having a north a south pole. An unmagnetized ferromagnetic object contains magnetic domains whose poles point in random directions and a magnetized ferromagnetic object contains magnetic domains whose N and S poles are aligned.

Alignment of Domains

ebrady38 — 2023-12-05 23:43:13 UTC

Magnetic domains within an unmagnetized ferromagnetic object can be aligned by rubbing the ferromagnetic object with one pole of a permanent magnet or by holding one pole of a permanent magnet close to a ferromagnetic object.

Magnetic domains can become disoriented within a magnetized ferromagnetic object if it is hit repeatedly or heated to a high temperature.

Magnetic Fields

ebrady38 — 2023-12-05 23:55:52 UTC

Every magnet has a magnetic field around it. The farther away from the magnet, the weaker the field gets. The Earth has a strong magnetic field, that is why compasses are able to be easily attracted to the Earth's north pole.