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Chapter 7 Vocabulary

Magnetism The properties and interactions of magnets.
Magnetic Field A region of space that surrounds a magnet and exerts a force on other magnets and objects made of magnetic materials.
Magnetic Poles The regions of a magnet that exert the strongest force.
Magnetic Domains Groups of atoms with aligned magnetic poles.
Electromagnetic Force The attractive or repulsive force between electric charges and magnets.
Electromagnetism The interaction between electric charges and magnets.
Solenoid A single wire wrapped into a cylindrical wire coil.
Electromagnet A temporary magnet created when there is a current in a wire coil.
Galvanometer A device that uses an electromagnet to measure electric current.
Electric Motor A device that changes electrical energy into mechanical energy.
Electromagnetic Induction The generation of an electric current by a changing magnetic field.
Generator Uses electromagnetic induction to transform mechanical energy into electrical energy.
Turbine A large wheel that rotates when pushed by water, wind, or steam.
Direct Current Electric current that is always in one direction through a wire.
Alternating Current Electric current that reverses the direction in a regular pattern.
Transformer A device that increases or decreases the voltage of an alternating current.
Created by: 19inmmor