Vocabulary
Section 1
Section 2
Section 3
Grab Bag
100
Any material that attracts iron or materials containing iron.
What is a magnet?
100
The opposite ends of a magnet
What is the north and south pole?
100
This person discovered the relationship between electricity and magnetism in 1820.
Who is Hans Christian Oersted?
100
Two scientists that discovered if a magnetic field could make an electric current.
Who are Joseph Henry and Michael Faraday?
100
Definition of a transformer
What is a device that increases or decreases the voltage of alternating current?
200
The interaction between electricity and magnetism
What is electromagnetism?
200
Region around a magnet in which magnetic forces can act.
What is a magnetic field?
200
Two devices that strengthen the magnetic field of a current carrying wire
What is a solenoid and electromagnet?
200
Electric generator turns mechanical energy into...
What is an electrical energy?
200
Caused by dropping a magnet or hitting it too hard.
What is a magnet loses its alignment?
300
The process of creating a current in a circuit by changing a magnetic field.
What is electromagnetic induction?
300
Groups of atoms in tiny areas. Found in materials such as iron, nickel,cobalt.
What are domains?
300
An electric motor changes electrical energy into...
What is mechanical energy?
300
Alternating current is...
What is it when an electric current changes direction?
300
Loop or coil of wire that can rotate in an electric motor
What is an armature?
400
Device that measures current
What is galvanometer?
400
Formed when charged particles from the sun hit oxygen and nitrogen atoms in the air.
What is an aurora?
400
The reason electromagnets are very useful.
What is they can be turned on and off as needed?
400
Increase voltage, decrease current
What is a step-up transformer?
400
Decrease voltage, increases current
What is step-down transformer?
500
Magnet difficult to magnetize but tends to keep magnetic properties longer. Some are made with alnico.
What is a permanent magnet?
500
The reason a compass needle points to Earth's geographic North Pole.
What is the Earth's magnetic south pole is Earth's geographic North Pole?
500
Example of something that uses an electromagnet.
What is a doorbell?
500
Four parts of a simple generator
What is a coil of wire, slip rings, brushes, and permanent magnet?
500
By lining up domains in... you can make it into a magnet.
What is iron, cobalt, or nickel?
M
e
n
u