Science Ch. 8 Test Electric and Magnetic Forces

The buildup of nonflowing electric charges on the surface of an object is called ____electricity.

• current

• power

• static

• none of the above

Sometimes when objects rub against each other, _____charges move from one object to the other.

• positive

• negative

• all

• none of the above

A material that allows electric charge to flow through it easily. Metal can be a good ______.

• conductor

• insulator

• charge

To pull toward means ____.

• attract

• repel

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An invisible pulling or pushing force that exists around a magnet is called _____.

• magnetism

• electricity

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A place on a magnet where its magnetism is strongest is called ____.

• the center

• the magnetic pole

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Matter that is neutral has ___ ___ ____ ____ ___.

• the same number of positive and negative charges

• has more positive than negative charges

_____ magnets do not lose their magnetism.

• Permanent

• Temporary

The strength of a magnetic force depends on ___.

• the distance between objects

• the position of the magnets

• the properties of the objects

• all of the above

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This picture shows that forces _____.

• attract

• repel

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