14 terms

Houghton Mifflin Science Grade 4 chapter 15

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conductors
Materials that negatively charged particles can move through easily.
electric cell
A divice that turns chemical energy into electrical energy.
electric charges
Tiny particles that carry units of electricity.
electric circuit
The pathway that an electric current flows
electric current
A continuous flow of electric charges.
electromagnet
A strong temporary magnet that uses electricity to produce magnetism.
generator
A divice that uses magnetism to convert energy of motion into electrical energy.
insulators
Materials that electric charges do not flow through easily.
magnet
An object that attracts certain metals, mainly iron.
magnetic poles
The two areas on a magnet with the greatest magnetic force.
motor
A divice that changes electrical energy into energy of motion.
parallel circuit
A circuit in which the parts are connected so that the electric current passes along more than one pathway.
series circuit
A circuit in which the parts are connected so that the electric current passes through each part along a single pathway.
static electricity
An electric charge that builds up on a material.
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