Chapter 7 Vocab Flashcards Preview

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Flashcards in Chapter 7 Vocab Deck (17):
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Magnetic domain

Group of atoms in a magnetic materiel where the magnetic poles of the atoms of aligned in the same direction

1

Magnetic field

Region that surrounds a magnet; exerts force on other magnets and objects made of magnetic materials.

2

Magnetic pole

Region on a magnet where the magnetic force entered by the magnet is the strongest

3

Magnetism

Properties and interactions of magnets

4

Electric motor

Device that converts electrical energy to mechanical energy

5

Electromagnet

Temporary magnet created when there is a current in a wire coil

6

Electromagnetic force

The attractiveness or repulsive force between electric charges and magnets

7

Electromagnetism

The interaction between electric charges and magnets

8

Galvanometer

Device that uses an electromagnet to measure electric current

9

Solenoid

Cylindrical coil of wire used to produce a magnetic field when an electric current passes through the wire

10

Alternating current

Electrical current that reverses it direction of flow in a regular pattern

11

Direct current

Electric current that flows only in one direction

12

Electromagnetic induction

Process by which electric current is produced in a wire loop by a changing magnetic field

13

Generator

Device that uses electromagnetic induction to convert mechanical energy to electrical energy

14

Transformer

Device that uses electromagnetic induction to increase or decrease the voltage of an alternating current

15

Turbine

Large wheel that rotates when pushed by steam,wind or water and provides mechanical energy to a generator

16

North vs south

North pushes and south pulles