Magnetism and Electricity

Iron, Nickel and cobalt are all __________________ materials

• Shiny
• poles
• magnetic
• cold

What will happen when these magnets are brought close together?

• They will attract each other.
• They will repel each other.
• Both magnets will turn to the left
• Both magnets will turn to the right

Magnetism is a type of ____________

• force
• book
• plant
• animal

When two magnets attract, they ______________

• push apart
• change color
• get colder
• pull together

When two magnets repel, they ________________

• change color
• pull together
• push apart
• get colder

The force of magnetism can go through many materials.

• True
• False

A north pole and a south pole will attract.

• True
• False

How is an electromagnet different from a permanent magnet?

• An electromagnet is smaller and less powerful.
• An electromagnet's magnetism can be turned off.
• An electromagnet can be built without using metal.
• An electromagnet does not attract objects containing iron.

A coil that is magnetized only when an electric current flows through it is_______.

• a battery
• a generator
• a conductor
• an electromagnet

How can the strength of an electromagnet be increased?

• by rubbing it with a stronger magnet
• by increasing the coils of wire around the iron
• by increasing the length of the wire from the battery
• by loosening the coil of wire around the iron