A force that acts on moving electric charges and on magnetic materials that are near a magnet.
What is Magnetism
100
The number of poles that all magnets must have
What is two?
100
In an electromagnet, this is what you wrap your wire around
What is a core?
100
A device with a magnetic needle that indicates direction?
What is a compass?
100
A metal that is usually attracted by a magnetic field
What is iron?
200
The two ends of a magnet
What are magnetic poles?
200
Where the magnetic field is strongest
What is at the magnetic poles?
200
Two sound devices that have electromagnets.
What is a doorbell, earphones, speaker, microphone, etc.
200
What happens when a magnetic north pole and a magnetic north pole are near each other
What is repel?
200
True or False? The Earth's North Pole is actually a magnetic south pole.
What is true.
300
The space around a magnet in which magnetic forces operate?
What is a magnetic field.
300
What lifts and propels a maglev train
What is magnetic force.
300
An electromagnet is able to observe organs and tissues inside a body without cutting into the body
What is Magnetic Resonance Imaging (MRI).
300
Causes the compass needle to point north when not near any other magnetic objects
What is the Earth's magnetic field?
300
A device that you use everyday that has electromagnets in it.
What is a cell phone, refrigerator, earbuds, etc.
400
A coil of wire, around an iron core, through which an electric current passes
What is an electromagnet.
400
The type of magnet that never loses its magnetism
What is a permanent magnet?
400
Two ways to increase the strength of an electromagnet
What is using an iron or steel bar, thicker wire, add more windings, stronger battery, more batteries, etc.
400
The person who discovered that an electrical current has a magnetic field
Who is Oersted?
400
How are electric current and magnetic fields related?
What is electric currents produces a magnetic field, and magnets in motion produce electricity.
500
A device that uses moving magnets to produce electrical energy
What is a generator.
500
Describe how magnetic poles behave.
What is opposites attract and like/same repel.
500
Makes an electromagnet different from a permanent magnet
What is using electric current to turn on/off the magnetism?
500
You are walking along a mountain trail using a compass and the needle moves away from point northward. You have no magnets with you. What caused the needle to move?