Chapter 16 Vocabulary Flashcards Preview

8th Grade Science > Chapter 16 Vocabulary > Flashcards

Flashcards in Chapter 16 Vocabulary Deck (15)
Loading flashcards...
1

Magnet

Any material that attracts iron or materials containing iron.

2

Magnetic Pole

One of two points, such as the ends of a magnet, that have opposing magnetic qualities.

3

Magnetic Force

The force of attraction or repulsion generated by moving or spinning electric charges.

4

Magnetic Field

A region around a magnet in which magnetic forces act.

5

Ferromagnet

A magnet made of iron, nickel, cobalt, or mixtures of those metals; have strong magnetic properties.

6

Electromagnetism

The interaction between electricity and magnetism.

7

Solenoid

A coil of wire with an electric current in it.

8

Electromagnet

A coil that has a soft iron core and that acts as a magnet when an electric current is in the coil.

9

Electric Motor

A device that converts electrical energy into mechanical energy.

10

Armature

A loop or coil of wire that can rotate in electric motors; mounted between the poles of a permanent magnet or electromagnet.

11

Commutator

A ring that is attached to the armature to reverse the direction of the electric current in the wire.

12

Galvanometer

A device that measures current; consisting of a small electromagnet and needle on a pivot between the poles of a permanent magnet.

13

Electromagnetic Induction

The process of creating a current in a circuit by changing a magnetic field.

14

Electric Generator

A device that converts mechanical energy (fossil fuels, nuclear energy, etc.) into electrical energy.

15

Transformer

A device that increases or decreases the voltage of alternating current.