Show:
Polar Opposites
You're Attractive
It's Magnetic
Magnetic Uses
"Current" Events
100
The poles of a magnet are called this.
What are north and south poles?
100
What unlike poles do.
What is attract?
100
These types of elements are more likely to be magnetic.
What are metals?
100
Found in doorbells, speakers, and door locks a Disney.
What is an electromagnetic?
100
Can be produced by spinning coils of wire in a magnetic field, or vise versa.
What is electricity? (electric current)
200
When the current alternates in a circuit, the magnetic field does this.
What is reverses?
200
What like poles do?
What is repel?
200
The locations of a magnetic where the force is greatest.
What are the poles?
200
One advantage of an electromagnet.
What is it can be turned on and off?
200
Current that flows in only one direction.
What is direct current?
300
We know this has happened in the past because it is set in stone along the mid-Atlantic Ridge.
What is earth's polarity?
300
Doing this can increase the strength of an electromagnet.
What is adding coils or increasing current?
300
The area around a magnet where the force can be detected.
What is magnetic field?
300
Used to produce electric current.
What is a generator?
300
Current that reverses direction.
What is alternating current?
400
The magnetic pole in Antarctica is this one.
What is magnetic north?
400
Doing this can cause a magnet to lose magnetic properties.
What is heating, dropping, or storing "backwards"?
400
An instrument that uses an electromagnet to detect electric charge.
What is a galvanometer?
400
Converts electrical energy to mechanical energy.
What is a motor?
400
Part of a motor that reverses the direction of electric current.
What is a commutator?
500
The three common magnetic materials are these elements.
What are iron, nickel and cobalt?
500
The Earth has a bigger one of these than any other rocky planet.
What is magnetosphere?
500
A switch that creates an alternating current.
What is a commutator?
500
Converts mechanical energy to electrical energy.
What is a generator?
500
An instrument that measures an electric current.
What is a galvanometer?