Electromagnets

Front

What surrounds every magnet?

Back

A magnetic field.

Front

What type of magnet are refrigerator magnets and bar magnets?

Back

Permanent magnets.

Front

What kind of magnet can be turned on and off?

Back

An electromagnet.

Front

How can Bob make his weak electromagnet stronger?

Back

By using thicker wire.

Front

In magnets and electromagnets, do similar poles attract?

Back

False.

Front

What is an electromagnet?

Back

A type of magnet that is created by electric current and can be turned on and off.

Front

What materials are commonly used to make electromagnets?

Back

Copper wire and iron cores.

Front

What happens when you increase the number of coils in an electromagnet?

Back

The strength of the electromagnet increases.

Front

What is the role of electricity in an electromagnet?

Back

Electricity creates a magnetic field when it flows through the wire.

Front

Can you name a common use of electromagnets?

Back

They are used in electric motors and magnetic locks.