Magnetism Flashcards
What 2 poles do magnets have?
North and south pole
What is the magnetic field?
The area around the magnet that has the force of the magnet is strong
The field line flows from the ________ pole to the ________ pole
North to the South pole
3 things about magnetic field lines
-they never cross
-they are continuous
-the closer the stronger
Do opposite pole attract or repel and do same poles attract or repel?
Opposite poles attract and same poles repel
What are temporary magnets?
When some metals get magnetized for some time ( attracts to metals for some time)
What are induced magnets?
Introducing a metal to magnetism
What is magnetic induction?
When a metal is made to have a magnetic field
What is permanent magnetism?
Always magnetised
What is a domain?
A group of spinning electrons
What method can a magnetic object be made into a magnet?
The stroking method
Electromagnets are magnets that can be _________?
Turned on and off
Electromagnets are made of 3 C’s
Core , current and coils
What do the 3 C’s mean?
Core - Made of soft iron
Current - A flow of electrons in a wire
Coils - Usually copper wire covered in insulating material
When electricity is on , what does it make a domain?
A material
