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100
The strength of two magnets' attraction or repulsion depends on the what
What is the distance between them
100
An object that has the property of attracting certain metals.
What is a magnet
100
A group of atoms whose magnetic fields are lined up in the same direction.
What is domain
100
An electromagnet only works if...
What is the current is flowing
100
A tool that uses a magnet to determine direction.
What is a compass
200
These kind of poles attract each other.
What is opposite
200
These kind of poles repel each other.
What is like
200
Electrons spinning in this direction cancel each other out.
What is opposite
200
If a compass is placed next to a flowing circuit, the ______ will line up with the magnetic field of the wire.
What is the needle
200
This has a giant magnetic field.
What is Earth
300
Magnetic force is ___________ at a magnet's poles.
What is strongest
300
The area around a magnet in which magnetic force is exerted.
What is a magnetic field
300
Magnetism is produced by these type of charges
What is moving electric charges
300
The strength of this depends on the number of loops of wire and the amount of current passing through the wire.
What is a solenoid
300
These are used in stereo speakers, car motors, and refrigerators.
What is electromagnets
400
The attraction and repulsion between magnets.
What is magnetic force
400
When a magnet ________ a magnetic field, it will naturally line up with the magnetic field.
What is enters
400
You can magnetize a piece of iron by doing this
What is rubbing it with a magnet
400
A current-carrying coil of wire with many loops wrapped around a magnetic rod.
What is an electromagnet
400
What kind of charge do electrons have?
What is negative.
500
Why will one magnet lowered into a bucket of nails pick up a chain of nails?
The magnet has a magnetic force which temporarily magnetizes the nails.
500
What will happen if you cut a magnet in half?
You will have two magnets, each one with a north pole and a south pole.
500
How can you cause a magnet to lose magnetism?
You can heat a magnet to a certain temperature or drop it with a great force to make a magnet lose magnetism.
500
What happens to the electromagnet if the circuit is broken?
If the circuit is broken, the electromagnet stops working.
500
Why will the north end of a compass needle always point toward the north pole of the Earth?
The end of the compass needle is attracted to a north pole and a south pole.