Poles
True or False.
Opposite poles attract.
True
How can we test the strength of an electromagnet?
See how many paperclips it can pick up
True of False.
The Earth has its own magnetic field.
True
Which direction does a compass point in?
North
Give two real-world uses of magnets.
Two correct answers given
Would two south poles repel or attract?
Repel
How can we increase the strength of an electromagnet?
Add more coils of wire.
Increase electric current.
What is the area around a magnet where magnetism is felt called?
A magnetic field.
Why does the needle in a magnet point north?
Because the needle itself is a magnet.
True or False.
All metals are magnetic
False
What does repel mean?
A force pushing away
What is an electromagnet?
A temporary magnet that can be turned on and off using an electric current.
True or False.
Magnetism is a contact force.
False. It is a non-contact force.
Which animals use an internal compass for navigation?
Birds and some fish
What materials are magnetic?
Iron, nickel, cobalt, steel
What are the names of the Earth's poles?
The north pole and south pole
What equipment do you need to make an electromagnet?
Power pack
Magnetic core
Conductor
What happens to the strength of the magnetic field as you move away from the magnet?
It becomes weaker.
When were the first compasses used?
2500 years ago in China
What is a solenoid?
A wire coiled up into a spiral shape.