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Casteel 5.4

SOL 5.4 Electricity and Magnetism

TermDefinition
lightning a discharge of static electricity from a huge cloud called a thundercloud
electrical energy related to the movement of charged particles. It can come from batteries.
static electricity the build up of electrical charge on a material
circuit the path that electricity can move through
switch a device that controls the current in a circuit; it can open or close an electric circuit
conductor a material through which heat or electricity flows easily
insulator a material through which electricity does not flow easily
closed circuit a circuit with no gaps or breaks in the path (a complete path so current electricity will flow through the path)
open circuit a circuit with gaps and breaks (an incomplete path so current electricity will not flow through)
positive A ____________________ electrical charge is a plus sign (+).
negative A ____________________ electrical charge is a minus sign (-).
poles one of two ends of a magnet; every magnet has two poles (north and south).
electromagnet a temporary magnet created when current flows through wire wrapped in coils around an iron bar. It is a magnet made with electricity.
attract Opposite charges +/- attract each other.
repel Like charges +/+ or -/- repel each other.
Ben Franklin a curious and inventive thinker. In 1752, he used a key tied to a wet string from a kite during a thunderstorm to prove that lightning was a form of electricity. He discovered the lightning rod which protected buildings and ships from lightning damage.
Michael Faraday a British physicist and chemist that studied the nature of electricity and the magnetic field around a conductor. He discovered electromagnetic induction, the electric motor, the transformer, and generator in the mid 1800's.
Thomas Edison In 1879, invented a long-lasting light bulb. He built the first power plant.
Created by: lkcasteel
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