Magnetism (7th Grade Science)

What happens if you break a magnet in half?

• One half will have a north pole only and one half will have a south pole only.

• Each half will be a new magnet, with both a north and south pole.

• It won’t be a magnet anymore.

Magnetic poles that are alike

• attract each other

• repel each other

• do not interact

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The region around a magnet where the magnetic force is exerted is known as its

• magnetic pole

• lodestone

• magnetic field

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A cluster of billions of atoms that all have magnetic fields lined up in the same way is known as a

• magnetic field line

• magnetic pole

• magnetic domain

Magnetic field lines around a bar 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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Where is the magnetic pole in the Northern Hemisphere?

• at the geographic north pole    

• along the coast of Antarctica  

• in northern Canada

Streams of electrically charged particles flowing at high speeds from the sun make up the

• solar wind.

• magnetic domain.

• magnetic field.

If you are in the Northern Hemisphere and see the Northern Lights, you are seeing

• • an aurora.

• • a magnetic field.

• • the magnetosphere.

A spinning electron produces a(n)

• element.

• magnetic field.

• proton.

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What is magnetism?

• the force of attraction or repulsion of magnetic materials

• a property of all rocks

• a lodestar

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