Magnets and Magnetism
What is something that attracts iron?
Magnet
Interaction between electricity and magnetism
Electromagnetism
A device that increases or decreases the voltage of alternating current.
A transformer
What is a major property of magnets?
-Poles
-Force
-Magnetic Field
A magnet that has been charged or is charged
Electromagnet
Explain the difference between a step-up and a step-down transformer.
A step-up transformer increases voltage and a step-down transformer decreases voltage.
The region around a magnet where the magnetic force can act
Magnetic field
A device that changes electrical energy into mechanical energy.
Electric Motor
What do scientists think causes the Earth's magnetic field?
Electric charges in the Earth's core.
What makes something magnetic?
The electrons in the object must be aligned, or lined up.
A coil of wire that produces a magnetic field when carrying an electric current.
Solenoid
What is a way for a magnet to lose it's magnetism?
-Drop the magnet
-Increase the temperature
-Hitting the magnet
Name 1 kind of magnet.
-Ferromagnets
-Electromagnets
How can you increase the power of an electromagnet?
By increasing the number of loops of wire around it.
What causes an aurora or "northern lights"?
Charged particles from the sun hit oxygen and nitrogen in the air in the correct pattern.