Magnets Review

How do you increase potential energy in a system of magnets?

• Moving them with the magnetic force.

• Moving them against the magnetic force.

• Always moving them closer together.

• Always moving them farther apart.

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What happens when two north poles of a magnet are placed together?

• they repel

• they attract

• they cancel each other out

• the strength of the magnet is doubled

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Looking at the field lines in this picture, these two magnets are ________

• Attracting

• Repelling

• Attracting and Repelling

• Doing nothing

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The area of magnetic force around a magnet is known as its _____________.

• magnetic field

• magnetic declination

• magnetic fan lines

• magnetic tan lines

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magnetic field

• the space around a magnet in which magnetic forces can act on objects

• to separate or set apart

• one of the two opposite ends of a magnet

• to provide evidence that goes against a claim

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The system of magnets in the image are __________________ each other.

• Neutralizing

• Attracting

• Repelling

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Based on the magnetic field line diagrams, what will happen next with these sets of magnets?

• The magnets in Set 1 will attract, and the magnets in Set 2 will repel.

• The magnets in Set 1 will attract, and the magnets in Set 2 will not move.

• The magnets in Set 1 will repel, and the magnets in Set 2 will attract.

• In both sets, the magnets will attract.

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This is a picture of a simple electromagnet. How can the electromagnet be made stronger?

• Add more coils of wire to the nail.

• Use a smaller battery.

• Reverse the poles of the magnet.

• Remove all the coils and the nail.

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Magnetic field lines around a bar magnet...

• are only perpendicular to the magnet.

• spread out from one pole and curve around to the other.

• cross back and forth over one another.

• are perfectly straight.

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Magnetic field lines are closet together at the __________.

• poles

• lines

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