Chapter 20 terms

Question 1

Place where the magnetic force is strongest

Answer 1

Magnetic Poles

Question 2

A force of attraction or repulsion between poles of two magnets

Answer 2

Magnetic force

Question 3

Any material strongly attracted to a magnet

Answer 3

Magnetic material

Question 4

elements including iron, nickel, and cobalt that have an especially strong attraction to magnets.

Answer 4

Ferromagnetic elements

Question 5

The region in a magnetic material in which the magnetic fields of an atom all point in the same direction

Answer 5

Magnetic domain

Question 6

Magnet that quickly loses its magnetic field after being removed from a magnetic field

Answer 6

Temporary magnet

Question 7

Remains a magnet after being removed from another magnetic field

Answer 7

Permanent Magnet

Question 8

Magnet created by wrapping a current-carrying wire around a ferromagnetic core

Answer 8

Electromagnet

Question 9

A device that uses an electromagnetic current to produce motion

Answer 9

electric motor

Question 10

A device that uses a magnetic field to transform mechanical energy to electric energy

Answer 10

Electric generator

Question 11

An electric current that flows in one direction

Answer 11

direct current

Question 12

An electric current that changes direction in a regular pattern

Answer 12

alternating current