The Power of Magnets

Which of these materials will a magnet attract?

• paper
• iron
• copper
• wood

If two magnets repel each other, what can you infer about the poles that are pushing against each other?

• They are 2 north poles.
• They are 1 north and 1 south pole.
• They are 2 south poles.
• Either A or C are can be true.

According to the book, magnets are used to make all of the following machines work, except:

• hair dryers
• computers
• televisions
• bicycles

Which of the following are inventions that use magnets?

• MRI machines
• some high-speed trains
• both choice A and choice B
• none of these choices

A magnet attracts some kinds of metal. What does attracts mean?

• an invisible energy
• pulls toward
• makes electricity in
• pushes away

Which of the following is an opinion about magnets?

• Magnets are the most useful objects.
• Magnetism is an invisible force.
• Doctors use magnets to help them in their work.
• Generators make electricity by spinning magnets.

What will happen if you put the north pole of one magnet next to the south pole of another magnet?

• They will attract each other.
• They will repel each other.
• They will generate electricity.
• Both choice A and choice C are correct.

What was the author's purpose for writing this book?

• to entertain the reader
• to inform the reader of the many uses of magnets
• to persuade he reader that they should use magnets
• all of the above choices are correct

What is the main idea of this book?

• Magnets are special metals that attract some other metals and have many uses.
• Magnetism is a force that's invisible.
• Magnets help make, and use, electricity.
• Magnets are really fun.

If  2 poles of a magnet repel each other, they ________________________

• spin around.
• pull toward each other.
• push away from each other.
• neither push or pull each other.