Electricity Week 2 Day 3

How are electromagnets different from magnets?

• magnets can be turned on/off
• you can turn an electromagnet on/off
• magnets are more powerful
• magnets have a North and South pole

The Earth produces its own magnetic field.  True or false?

• False
• True

Surrounding every magnet is a __________  __________.

• magnetic field
• electrical current
• another magnet
• an enemy

In order for an electromagnet to be formed, an __________ current must pass through a coil of __________ wrapped around an ________ core.

• wire, iron, electric
• electric, wire, iron
• iron, electric, wire
• excited, hair, apple

This is a picture of a simple electromagnet. How can the electromagnet be made stronger?

• Add more coils of wire to the nail.
• Use a smaller battery.
• Reverse the poles of the magnet.
• Remove all the coils and the nail.

Electricity can be used to create a magnet

• True
• False

What is most likely to happen when the switch is closed?

• A magnetic field should be produced
• The nail will rust
• The battery will explode
• The wire will catch on fire

Which way will the magnets move after they are released?

• Towards each other
• Away from each other
• Not enough information

Which picture has the most potential energy?

• Picture A
• Picture B

What is the device seen here?

• generator
• electric motor
• electromagnet
• magnet