Show:
Magnetism
Everyday magnets
kinds of magnets
Electromagnets
Electromagnetic Spectrum
100
The properties and interactions of magnets in which there is a force of attraction or repulsion.
What is magnetism?
100
A coil of wire and a magnet makes this vibrate.
What is a smart phone (or game controller)?
100
The most popular type of rare earth magnet.
What is a neodymium magnet?
100
This forms around a wire when an electric current flows through it.
What is a magnetic field?
100
These all have different _____. Radio ____, Infrared ____, Visable light ____.
What are waves?
200
The strength of the force between two magnets depends on this.
What is the distance between the magnets?
200
A wire coil and a magnet will produce this.
What is sound?
200
Magnets that are easier to be demagnetized are this.
What are soft ferrites?
200
The amount of current flowing through the wire on an electromagnet determines this.
What is the strength of the magnet? (think about the cheap battery vs the energizer)
200
As the waves get smaller these now are called something else. Ultraviolet _______, x-______ and gamma ______.
What is rays? (sure hope you answered 100pts first!)
300
Why do all Magnets like Polar Bears and Penguins?
What is they have a north pole and a south pole.
300
Magnetic particles that contain bank information can be found here.
What is the black strip on a bank or credit card?
300
Magnets that are harder to demagnetize are this?
What are hard ferrites?
300
In addition to the stregnth of the battery, the other way to increase power of an electromagnet is to increase this.
What are the number of turns of the coil?
300
Natural electromagnetic radiation comes from here.
What is the sun?
400
These metals have naturally occurring properties so they can become magnets.
What are iron, cobalt and nickel?
400
Flexible rubberized magnetic strips are on this appliance to keep in the cold.
What is a refrigerator?
400
A small electric motor has (a hard or soft) ferrite magnet?
What is hard?
400
An electric motor can do this.
What is turn electric energy into mechanical energy? (turn something, lift something, pull etc.)
400
Human made radiation can come from these recent inventions.
What are cell phones, microwaves and power lines?
500
The EIS most distracted teacher 2012 winner.
Who is Mrs Huxter? (give yourself 500 pts :) )
500
I need to find North... so I can go east... I will use this tool.
What is a compass?
500
The resistance to being demagnetized.
What is coercivity?
500
In an electric motor this turns between two of these.
What are the poles of a permanent magnet?
500
The moon, an asteroid, a comet, and planets all do this.
What is emit electromagnetic radiation?