BJU Science 4th Ch 5

An unbroken path through which negative charges can flow is called a ____.

• circuit

• series

• conductor

When electrical charges build up on the surface of an object, _____occurs.

• a series circuit

• static electricity

• current electricity

An object that attracts certain metals is called ____.

• a circuit

• a magnet

• an insulator

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A material that does not allow electricity to flow through it easily is called ____.

• an insulator

• a circuit

• a conductor

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A material that allows electricity to flow through it easily is called _____.

• a circuit

• an insulator

• a conductor

A magnetic field is caused when _____ flows through a circuit.

• air

• a current

• protons

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A form of energy that involves the flow of electrical charges is called ____.

• a circuit

• magnetism

• electricity

Two things that use electromagnets are microwave ovens and ____.

• maglev trains

• screwdrivers

• paper currency

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Objects with the same kind of charge ____each other.

• repel

• attract

• negative

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Objects with opposite charges ______ each other.

• attract

• repel

• neutral

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