Chapter 7 Flashcards
Magnetism
Vocabulary
Magnetism
The properties and interactions of magnets
Vocabulary
Magnetic Field
A region of space that surrounds a magnet and exerts a force on other magnets and objects made of magnetic materials
Vocabulary
Magnetic Poles
The regions of a magnet that exert the strongest force
Vocabulary
Magnetic Domains
Groups of atoms with aligned magnetic poles
Vocabulary
Electromagnetic Force
The attractive or repulsive force between electric charges and magnets
Vocabulary
Electromagnetism
The interaction between electric charges and magnets
Vocabulary
Solenoid
A single wire wrapped into a cylidrincal wire coil
Vocabulary
Electromagnet
A temporary magnet created when there is a current in a wire coil
Vocabulary
Galvanometer
A device that uses an electromagnet to measure electric current
Vocabulary
Electric Motor
A device that changes electrical energy into mechanical energy
DC- Battery
Vocabulary
Electromagnetic Induction
The generation of an electric current by a changing magnetic field
Vocabulary
Generator
Uses electromagnetic induction to transform mechanical energy into electrical energy
AC
Vocabulary
Turbine
A large wheel that rotates when pushed by water, wind, or steam
Vocabulary
Direct Current
Electric current that is always in one direction through a wire
Vocabulary
Alternating Current
Electric current that reverses the direction in a regular pattern
