Types
What is a magnet?
Parts of the magnet where the magnetic force is the greatest.
What are the magnet's poles? or.. What are the North and South pole?
Magnets have two classifications.
What is permanent and temporary?
To elements that make up electromagnetism.
What is magnetism and electricity?
Use electromagnetic induction to transform (change) mechanical energy to electrical energy.
What is a generator?
Contains iron, so it is also a magnetic material.
What is steel?
The law that says opposite poles attract and like poles repel.
Objects are magnetized if the domains meet a particular state.
What is alignment?
Coil of wire that produces a magnetic field when it carries an electric current.
What is a solenoid?
Increases or decreases the voltage of an AC current.
What is a transformer?
A curved magnet with opposite ends that are unlike poles (N & S).
Places where the magnet's effects can be felt.
What are magnetic field lines?
Groups of atoms that determine whether something is a magnet.
Two factors that make an electromagnet stronger.
What is looping more coils in the solenoid and increasing the current running from the power source?
Decreases voltage and increases current.
The earth is similar to a simple common magnet due to its iron core. (*hint: what shape/type)
What is a bar magnet?
When looking at field lines the place where iron filings are most concentrated.
What are the magnet's poles?
What is magnetism (magnet) or electricity?
Magnetism creating electricity. Happens when moving a magnet back & forth through a coil of wire that carries electrical energy, like copper wire.
What is electromagnetic induction?
The rotating coil or coils of an electric motor.
What is an armature?
Magnets created by electric current.
Magnets exert two different forms of force.
What is attraction and repulsion?
Temporary magnets can lose their magnetism by making the domains go back out of alignment by several ways. (3)
What is dropped (hits a hard surface), put in a strong magnetic field opposite its own, heat up the magnet (atoms vibrate faster)?
Part of an electric motor that is the device for reversing the direction of flow of the electric current.
What is a commutator?
Metals that can be made into permanent magnets.