Magnetic Forces Flashcards
What 4 materials are magnetic
Iron
Steel
Cobalt
Nickel
What are the 2 different poles in a magnet
South
North
What happens when you get 2 different poles next to each other
The attract
What happens when you get the same poles together
They repel
What happens when a compass is near a magnet
They align up with the magnetic field lines
Where is the magnetic field stronger for a bar magnet
At the poles
In a bar magnet
How can you tell that the magnetic field is stronger at the poles
The field lines are close together
What else has a magnetic field
The Earth
How is a magnetic field made
By charges moving
What is an Electromagnet
A strong, electrical magnet
What do you need to make an Electromagnet
A magnetic core with a wire wrapped around it
How can you make an Electromagnet stronger
Increase the Current, Potential Difference and the loops of wire wrapped around the core
Name some uses for Electromagnets
Motors
Sorting out magnet
Non-magnetic materials
Name 2 differences between Bar Magnets and Electromagnets
Bar magnets are permanent
Electromagnets are stronger
What is a relay
An electronic switch containing an Electromagnet
