Materials
This type of magnetic material exhibits strong magnetic properties and includes iron.
What is ferromagnetic?
These imaginary lines illustrate the shape and direction of a magnetic field.
What are magnetic field lines (flux)?
This is where the magnetic force of a magnet is the strongest.
What are the poles?
A current-carrying wire creates this around it.
What is a magnetic field?
Moving a wire through a magnetic field can generate this.
What is a potential difference (voltage)?
This type of magnetism is temporary and only occurs in the presence of a magnetic field.
What is induced magnetism (or temporary magnetism)?
Field lines point in this direction outside a magnet.
What is from the north pole to the south pole?
Like magnetic poles do this.
What is repel each other?
This shape describes the magnetic field lines around a straight wire.
What is a circle?
Moving a magnet through a wire loop can generate this.
What is a potential difference (voltage)?
Which term describes materials like silver or water that are repelled by magnetic fields?
What is diamagnetic?
Where are magnetic field lines most concentrated and strongest?
What is near the poles of the magnet?
These are regions within a material where electrons spin in the same direction.
What are magnetic domains?
This type of coil creates a strong and nearly uniform magnetic field when current passes through it.
What is a solenoid?
To produce current through induction, a conductor must do this relative to the magnetic field lines.
What is cut across (move through) them?
An alloy of aluminum, nickel, and cobalt can be used to create this kind of magnet.
What is a permanent magnet?
These instruments can be used to visualize magnetic field direction.
What is a compass or iron filings?
Breaking a magnet in half results in this.
What are two smaller magnets, each with a north and south pole?
Name one way to increase the strength of an electromagnet.
What is increase the current or increase the number of coils?
To induce an electric current a circuit requires needs to be a __________ _____________.
What is a closed loop?
Which magnetic property is shown by blood, where a weak, non-permanent magnetic state exists?
What is paramagnetic?
Magnetic field strength is represented by this symbol and measured in teslas.
What is B?
True or false: It is possible to isolate a magnetic monopole.
What is false?
Two parallel wires carrying current in the same direction will do this.
What is attract each other?
What happens to the electrons in a wire when a magnetic field induces a current?
What is they are pushed to one end, creating a charge separation and voltage?
Describe why Earth's geographic north pole is actually a magnetic south pole, and how this affects compass needles.
Because opposite poles attract, the north end of a compass needle is attracted to the magnetic south pole, which is geographically near the North Pole. Thus, Earth's magnetic "north" pole is actually a magnetic south pole.