Chapter 14: Magnetism 

________: a large wheel that rotates when pushed by water, wind, or steam.

________ commonly produce alternating current because the voltage can be increased or decreased with transformers.

There is a relationship between ________ and magnetism.

________: a device that increases or decreases the voltage of an alternating current.

The ________ produces the current that makes the coil an electromagnet.

A(n) ________ wrapped around an iron core forms an electromagnet.

________: uses electromagnetic induction to transform mechanical energy into electrical energy.

A(n) ________ is made from a current- carrying wire.

In a(n) ________, a coil rotates between the poles of a permanent magnet.

________: The generation of a current by a changing magnetic field.

________ have magnetic properties.

________: devices that use an electromagnet to measure electric current.

The electromagnet in a speaker converts ________ into mechanical energy to produce sound.

The ________ in a generator is rotated by an outside source of mechanical energy.

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.

The voltage in the ________ is the input voltage, and the voltage in the secondary coil is the output voltage.

________ can be found in many devices you use every day, such as TVs, video games, and telephones.

________: a device that changes electrical energy into mechanical energy.

________ can increase or decrease voltage.

________: a temporary magnet made by wrapping a wire coil carrying a current around an iron core.

________: A single wire wrapped into a cylindrical wire coil.

Some ________ first produce thermal energy by burning fossil fuels or using the heat produced by nuclear reactions.

A(n) ________ that increases the voltage so that the output voltage is greater than the input voltage is a step- up ________.

refers to the properties and interactions of magnets

exerts a force on other magnets and objects made of magnetic materials

where the magnetic force exerted by the magnet is strongest

The groups of atoms with aligned magnetic poles

a temporary magnet made by wrapping a wire coil carrying a current around an iron core

A single wire wrapped into a cylindrical wire coil

devices that use an electromagnet to measure electric current

a device that changes electrical energy into mechanical energy

The generation of a current by a changing magnetic field

uses electromagnetic induction to transform mechanical energy into electrical energy

a large wheel that rotates when pushed by water, wind, or steam

flows only in one direction through a wire

reverses the direction of the current in a regular pattern