1 / 6

Magnetism and magnets

Magnetism and magnets. By Matthew Cornelius. How it Works. Magnetic fields are formed in atoms by the movement of negatively charged electrons. This gives the atom a north and south pole. Domains are magnetic areas where the atoms line up.

chione
Télécharger la présentation

Magnetism and magnets

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Magnetism and magnets By Matthew Cornelius

  2. How it Works • Magnetic fields are formed in atoms by the movement of negatively charged electrons. This gives the atom a north and south pole. • Domains are magnetic areas where the atoms line up. • Materials have a strong magnetic field when the domains align and the north is pointing north and the south is pointing south.

  3. Magnetic Materials • Iron • Nickel • Cobalt • The domains in these materials align and they create and strong magnetic force.

  4. Properties of Magnets • All magnets have two poles, north and south. • Exert force, for example the force they exert on other magnetic substances. • All magnets are surrounded by a magnetic field.

  5. Does Earth Have a Magnetic Field • The poles of Earth point magnets in a certain direction. The north points a compass north and the south points a magnet south. • Magnetic field protects the Earth from charged particles that come from the Sun. • Scientists think the magnetic field is caused by the movement of electrons in the Earths core. This is plausible because the core contains iron and nickel.

  6. Testmoz Test • You can test your knowledge at http://testmoz.com/6774

More Related