Magnetism Three Properties of Magnets 1. Made of iron and attract materials that contain iron 2. Attract and repel other magnets 3. One part of a magnet.

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Presentation transcript:

Magnetism Three Properties of Magnets 1. Made of iron and attract materials that contain iron 2. Attract and repel other magnets 3. One part of a magnet will always point North if allowed to swing freely Three Properties of Magnets 1. Made of iron and attract materials that contain iron 2. Attract and repel other magnets 3. One part of a magnet will always point North if allowed to swing freely

Magnetism Vocabulary Permanent magnet-a magnet made of materials that keeps its magnetism Permanent magnet-a magnet made of materials that keeps its magnetism Temporary magnet – a magnet that loses its magnetism easily Temporary magnet – a magnet that loses its magnetism easily Ferromagnetic material-a material that shows strong magnetic effects Ferromagnetic material-a material that shows strong magnetic effects Magnetic field-the region around a magnet in which magnetic forces act. Magnetic field-the region around a magnet in which magnetic forces act. Magnetic field lines – line that map out the magnetic field and they never cross. Magnetic field lines – line that map out the magnetic field and they never cross. Permanent magnet-a magnet made of materials that keeps its magnetism Permanent magnet-a magnet made of materials that keeps its magnetism Temporary magnet – a magnet that loses its magnetism easily Temporary magnet – a magnet that loses its magnetism easily Ferromagnetic material-a material that shows strong magnetic effects Ferromagnetic material-a material that shows strong magnetic effects Magnetic field-the region around a magnet in which magnetic forces act. Magnetic field-the region around a magnet in which magnetic forces act. Magnetic field lines – line that map out the magnetic field and they never cross. Magnetic field lines – line that map out the magnetic field and they never cross.

Magnetic Earth How can Earth be compared to a bar magnet? How can Earth be compared to a bar magnet? Which pole does a compass needle point to? Which pole does a compass needle point to?Answers: Earth and a bar magnet both have poles, magnetic fields, and contain ferromagnetic material (iron) within their core. Earth and a bar magnet both have poles, magnetic fields, and contain ferromagnetic material (iron) within their core. A compass needle points to the the South magnetic pole which is near the geographic North pole. A compass needle points to the the South magnetic pole which is near the geographic North pole. How can Earth be compared to a bar magnet? How can Earth be compared to a bar magnet? Which pole does a compass needle point to? Which pole does a compass needle point to?Answers: Earth and a bar magnet both have poles, magnetic fields, and contain ferromagnetic material (iron) within their core. Earth and a bar magnet both have poles, magnetic fields, and contain ferromagnetic material (iron) within their core. A compass needle points to the the South magnetic pole which is near the geographic North pole. A compass needle points to the the South magnetic pole which is near the geographic North pole.