A current-carrying wire wrapped around an iron core is called THIS
What is an elctromagnet?
200
A material in which electrons can-not move easily from place to place
What is an insulator?
200
THIS surrounds all magnets
What a magnetic field?
200
THIS is a device uses a magnetic filed to turn motion into electricity.
What is a generator?
300
Metals such as copper, gold, sliver, and aluminum are examples of THIS type of material.
What is a conductor?
300
The earth's magnetic field is called THIS
What is the magnetosphere?
300
In THIS type of current, electrons flow in one direction.
What is direct current?
400
THIS object can be used to protect a building from being damaged by a lighting strike.
What is a lighting rod?
400
Early explorers used THIS instrument which contains a magnet for navigation
What is a Compass?
400
A device that changes the voltage of an alternating current with little loss of energy.
What is a transformer?
500
If a person has a build up of static electricity and touches another person they may feel a mild electric shock, what is the word that describes this rapid movement of of excess charges from on place to another?
What is electric discharge?
500
Opposites poles of a magnet does THIS while like poles do THIS. (TWO ANSWERS)
What are attract and repel
500
THIS machine can be used to to create images of the inside of a human body?