Magnetism (worksheet #1) Flashcards
What is magnetism?
Describes all phenomena related to/caused by magnets
What is a magnet?
An object attracted to another magnetic substance or a ferromagnetic substance
What occurs when a magnet is brought near another magnet?
Attraction/repulsion
What occurs when a magnet is brought near a ferromagnetic substance?
Attraction
What are some compounds of ferromagnetic substances?
Nickel, iron, cobalt
Is it possible for ferromagnetic substances to attract other ferromagnetic substances?
No
Name some examples for nonmagnetic substances.
Aluminium, copper, lead, plastic, organic compounds.
What happens when a nonmagnetic substance is placed near a magnetic substance?
Nothing
What do all magnets have?
A north and south pole
Where is the magnetic force the strongest on a magnet?
At the poles
What are substances composed of?
Domains
How can you tell the difference between a magnetic and nonmagnetic substance?
On a magnetic substance, its domains are aligned, while they are not aligned on nonmagnetic substances
- Opposite poles _____ and like poles ____
- As the distance between poles decreases, the force between the poles _______.
- As the distance between poles increases, the force between the poles _______.
- Opposite poles attract and like poles repel
- increases
- decreases
Geographic north is actually magnetic _____.
Geographic south is actually magnetic ____
Geographic north is actually magnetic south.
Geographic south is actually magnetic north.
What happens when you cut a magnet in two?
Each magnet will have its own pair of poles
What is a magnetic field?
The space that surrounds a magnet
How do the magnetic fields lines always move?
In the direction of North to South. (arrows exit from the North pole, enter into the South pole)
What is one method for detecting magnetic fields?
Sprinkle iron around a magnetic and filings will fall along lines of force
The compass needle arrow head is the ____ end of a magnet.
North
What is electromagnetism?
Describes all phenomena resulting from the interaction between electricity and magnetism
What are magnetic fields created by?
Electric currents
The _____ pole of a compass will always point in the direction of your __________.
The north pole of a compass will always point in the direction of your magnetic field.
