Magnets and Magnetism
More Magnets
Even More Magnets
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Wild Card
100
Any material that attracts iron or materials containing iron
Magnet
100
The interaction between electricity and magnetism
electromagnetism
100
The process of creating a current in a circuit by changing a magnetic field
electromagnetic induction
100
What is electromagnetic induction?
Making an electric current by changing an magnetic field.
100
What are some ways we use electromagnets every day?
Doorbells, motors, galvanometers
200
one of two points, such as the ends of a magnet, that have opposing magnetic qualities
Magnetic Pole
200
Electromagnet
200
A device that converts mechanical energy into electrical energy
electric generator
200
Which side of a transformer has the higher voltage?
The side that has the most loops.
200
What is a galvanometer?
A device that measures current.
300
the force of attraction or repulsion generated by moving or spinning electric charges
Magnetic Force
300
These two magnets will do what?
Repel
300
According to lesson 2, an object that is able to attract other objects containing iron from a distance anytime is called a:
Permanent Magnet
300
How many poles do magnets have?
Two
300
What are the three properties of magnets?
- Two poles (north and south)
- Magnetic force (same=repel, opposites=attract)
- Magnetic field (the region around a magnet in which magnetic forces can act)
400
Name two of the four kinds of magnets.
Magnets can be classified as ferromagnets, electromagnets, temporary magnets,
and permanent magnets.
400
A device that converts electrical energy into mechanical energy
electric motor
400
Where the magnetic field is the strongest on a magnet
the poles
400
An electromagnet is made up of a _______ wrapped around an iron core
solenoid
400
These lines map out the magnetic field.
Magnetic field lines
500
According to Lesson 2, how can we get the copper coil and magnet to change the direction of the force they apply to each other when the electricity is moving through the coil?
We can turn the direction of the magnet or the coil
500
The farther apart two objects are, the ____ their gravitational force.
Weaker
500
According to Lesson 2, an electromagnet an only be a magnet when:
It has an electric current running through it
500
How can you make an electromagnet even stronger?
Increase the number of loops in the solenoid.
500
The closer together the magnetic field lines are, the _______ the magnetic field is.
stronger