Category #1
Category #2
Category #3
Category #4
Category #5
100
Area of magnetic force around a magnet
What is a magnetic field
100
The number of poles that a magnet has
What is two (2)
100
The part of a loudspeaker that vibrates to create sound
What is the diaphragm
100
A device that uses a magnet to convert sound into electrical signals (think voice)
What is a microphone
100
Name 3 sources of energy
What are wind, fossil fuel, nuclear energy, geothermal energy, hydropower
200
An instrument that uses Earth's magnetic field to find directions
What is a compass
200
Most of Earth is made up of this
What is melted iron
200
It changes electrical energy into mechanical energy
What is a motor
200
A device that turns electrical energy into sound
What is a loud speaker
200
Two scientists that made discoveries about electric currents and magnets (p. 342)
Who are Michael Faraday and Joseph Henry
300
The parts of a magnet where the magnetic force is the strongest
What are the poles
300
The names of Earth's two poles
What are the North and South poles
300
An electrical current that flows in one direction and then flows in the opposite direction
What is alternating current
300
True or False, a microphone is a device that uses a magnet to convert sound into electrical energy
What is TRUE
300
Provides the mechanical energy for a generator
What is a turbine
400
An example of a permanent magnet (a rock)
What is magnetite
400
Two states of magnets coming together.
What is either attract or repel
400
The electrical flow is always in one direction
What is direct current
400
Magnets can attract this and you can see the strength of the magnetic force
What are iron shavings
400
What a shaft does
What is spin and move (usually turns a wheel or gear)
500
An object with a magnetic force
What is a magnet
500
A coil of wire wrapped around an iron bar
What is an electromagnet
500
Turn motion into electrical energy
What is a generator
500
A rod that can spin and move creating energy
What is a shaft
500
The part of a door bell that bangs against the bell
What is the hammer
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