Studied by 10 peopleTurbine
________: a large wheel that rotates when pushed by water, wind, or steam.
Power Plants
________ commonly produce alternating current because the voltage can be increased or decreased with transformers.
electricity
There is a relationship between ________ and magnetism.
Transformer
________: a device that increases or decreases the voltage of an alternating current.
Battery
The ________ produces the current that makes the coil an electromagnet.
Solenoid
A(n) ________ wrapped around an iron core forms an electromagnet.
Generator
________: uses electromagnetic induction to transform mechanical energy into electrical energy.
Electromagnet
A(n) ________ is made from a current- carrying wire.
Simple-Electric Motor
In a(n) ________, a coil rotates between the poles of a permanent magnet.
Electromagnetic Induction
________: The generation of a current by a changing magnetic field.
Electrons
________ have magnetic properties.
Galvanometers
________: devices that use an electromagnet to measure electric current.
Electrical Energy
The electromagnet in a speaker converts ________ into mechanical energy to produce sound.
Coil
The ________ in a generator is rotated by an outside source of mechanical energy.
Flexible Speaker
The sound is produced by a loudspeaker that contains an electromagnet connected to a(n) ________ cone that is usually made from paper, plastic, or metal.
Primary Coil
The voltage in the ________ is the input voltage, and the voltage in the secondary coil is the output voltage.
Magnets
________ can be found in many devices you use every day, such as TVs, video games, and telephones.
Electric Motor
________: a device that changes electrical energy into mechanical energy.
Transformers
________ can increase or decrease voltage.
Electromagnets
________: a temporary magnet made by wrapping a wire coil carrying a current around an iron core.
Solenoid
________: A single wire wrapped into a cylindrical wire coil.
power plants
Some ________ first produce thermal energy by burning fossil fuels or using the heat produced by nuclear reactions.
Transformer
A(n) ________ that increases the voltage so that the output voltage is greater than the input voltage is a step- up ________.
Magnetism
refers to the properties and interactions of magnets
Magnetic Field
exerts a force on other magnets and objects made of magnetic materials
Magnetic Poles
where the magnetic force exerted by the magnet is strongest
Magnetic Domains
The groups of atoms with aligned magnetic poles
Electromagnets
a temporary magnet made by wrapping a wire coil carrying a current around an iron core
Solenoid
A single wire wrapped into a cylindrical wire coil
Galvanometers
devices that use an electromagnet to measure electric current
Electric Motor
a device that changes electrical energy into mechanical energy
Electromagnetic Induction
The generation of a current by a changing magnetic field
Generator
uses electromagnetic induction to transform mechanical energy into electrical energy
Turbine
a large wheel that rotates when pushed by water, wind, or steam
Direct Current
flows only in one direction through a wire
Alternating Current
reverses the direction of the current in a regular pattern
Note 
Flashcard (108)