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Magnetism
Term | Definition |
---|---|
magnetic domain | Groups of atoms with aligned magnetic poles |
magnetic field | A region of space that surrounds a magnet and exerts a force on other magnets and objects made of magnetic materials |
magnetic pole | The regions of a magnet that exert the strongest force |
magnetism | It refers to physical phenomena arising from the force caused by magnets, objects that produce fields that attract or repel other objects. |
electromagnet | A type of magnet in which the electric field is produced by an electric current. |
geographic north pole | the northernmost point on the planet, where Earth's axis intersects with its surface. |
magnetic north pole | The south pole of the Earth's magnet. At this point the Earth's magnetic field points vertically downward. |
Opposite poles | North and south---attract |
Like poles | repel (North and north OR south and south) |
electric motor | transforms electrical energy into mechanical energy |
electromagnet | a temporary magnet created when there is a current in a wire coil |
galvanometer | uses an electromagnet to measure electric current |
electromagnetic induction | A changing magnetic field can induce a current in a wire |
generator | Transforms mechanical energy into electrical energy |