The Power of Magnets

Why does a magnet stick to a refrigerator door?

• because the door is cold

• because the door is sticky

• because the door is made of iron

• because the door is made of glass

Why are objects more likely to stick to the ends of a magnet?

• the ends have glue on them

• the ends are the most powerful

• the objects are repelled by the ends

• the magnet is repelled by the objects

What will happen if you try to put the north poles of two magnets together?

• they will pull apart

• they will stick together

• they will create a motor

• they will create an electromagnet

What pattern forms when you sprinkle iron filings around a magnet?

• a pattern in the shape of the wire

• a pattern in the shape of the magnetic field

• a pattern in the shape of the north pole of the magnet

• a pattern in the shape of the south pole of the magnet

What happens to an electromagnet when electricity is turned on in it?

• it becomes a magnet

• it loses it magnetism

• it wraps a wire around itself

• the wire around it loses its magnetism

According to the article, when would the reader use an electromagnet?

• anytime electricity was needed

• if a magnet was needed at night

• only if the reader operated a junkyard

• if the reader wanted to control the magnetic force

Why do junkyards use electromagnets?

• to pick up iron filings

• to pick up pieces of paper

• to pick up and put down cars

• to move dirt around the junkyard

What did Michael Faraday discover that a magnetic force could produce?

• electricity

• iron

• lightning

• water

How do the articles describe electromagnets DIFFERENTLY ?

• "The Power of Magnets" focuses on the high cost of electromagnets.

• "The Power of Magnets" has photos of machines that use electromagnets.

• "Electromagnets and You" describes how electromagnets are used in junkyards.

• "Electromagnets and You" describes how electromagnets are used in may household goods.

How are the articles ALIKE?

• both explain the history of magnets

• both explain how magnets are useful

• both explain how to create an electromagnet

• both explain how the poles of a magnet attract each other