Magnets
How many poles does a magnet have?
2
Do the magnetic field lines point away from the north pole of the magnet or the south pole?
When do magnets start exerting force?
When they are near other magnets.
Is it possible to have a magnetic south pole without a north pole? Why or why not?
What is a Magnet?
A magnet is a material that produces a magnetic field.
What is a magnetic field?
A magnetic field is the invisible area around a magnet that contains the magnetic force.
What is a magnetic force?
A magnetic force is a force that the magnets exert towards one another that pushes them away or pulls them together.
See last slide in slideshow and name all of the ends of the magnets with the correct poles.
Meredith and Sanvi will determine.
Name two or more examples of permanent magnets.
Refrigerator magnets, bar magnets, horseshoe magnets, etc.
Fill in the blank:
Magnetic fields can be sensed by_______.
Animals
Can magnetic forces pass through non-magnetic materials. If so, name two or more examples of non-magnetic materials.
Yes, magnetic forces can pass through non-magnetic materials. Plastic, wood, cardboard, glass, etc.
Name two or more magnetic materials.
Iron, nickel, cobalt, steel, etc.
What is a permanent magnet?
A permanent magnet is a magnet that cannot lose its magnetism whatsoever.
We know that Earth is a magnetic field, where is Earth's magnetic North Pole.
Antarctica.
What are the 3 combinations of magnetic poles and what do they result in? (aka: attract/repel)
N-S/S-N - attract
S-S - repel
N-N - repel
How is a field of force produced?
A field of force is produced by the movement of electric charges and the internal spins of electrons.