magnets and magnetic field Flashcards
Define magnets
They are a type of non-contact force, magnetic material don’t need to be in contact with a magnet to exert a force on eachother.
Define magnetic field
A region around a magnet that experiences a magnetic force
Define magnetic poles
They are the South and North poles that attract or repel a material. They are the two poles in a magnet
Define attract
Being pulled closer together
Define repel
Being pushed away from eachother
How many poles does the magnet have and what are they called
2: North pole and South pole
What poles attract and what poles repel, give examples
Attract: Opposite : South and North
Repel: Same: North and North or South and South
What 4 rules do magnetic fields need to have.
1- The lines never cross
2- North to South
3- The closer the lines are to each other, the stronger the force is.
4- Continuous
Where on the field lines is the force the strongest
Near the pole ( at the pole)
Where on the field lines is the force the weakest
Away from the pole
What metals are magnetic
Nickel,cobalt,iron and their alloys are they only magnetic metals
How is gravity and magnets similar
They are both non-contact forces.
What are magnetic field lines***
The are imaginary lines that show the direction of the force on the magnetic material .
List 2 ways you can ‘see’ magnetic field lines
Drawing field lines with the help of a compass
and/ or
use iron filling
What happens when you put iron filling around a magnet and why
You can see the magnetic field lines since iron is a magnetic material.
How do magnets interact with each other.
The two poles on the magnet are north pole and south pole. When two poles are the sam, they repel. WHen 2 poles are different, they attract. Magnets are a type of non-contact force, meaning the magnetic material doesn’t need to touch the magnet in order for their to be a magnetic field
How can magnetic field lines be represented
The magnetic field lines can be represented by drawing field lines with the help of a compass or use an iron filling.
The line closer to the magnet are more …..
concentrated
The field line have ….. on the
arrows
Direction of magnetic force is from …..
north to south
What happens when similar poles are put together?
repel
What happens when opposite poles are put together?
attract
Where is the magnetic field strongest?
Near the pole
*Why is magnetism like gravity?
Non-contact
