Chapter 14 – Magnetism

Question 1

What law states that unlike poles attract and like poles repel?

Answer 1

The law of magnetic poles

Question 2

What is the region surrounding a magnet in which other objects are affected by magnetism?

Answer 2

Magnetic field

Question 3

What is the extent to which a material can absorb or channel lines of magnetic flux?

Answer 3

Permeability

Question 4

If the distance between two magnets is decreased, what happens to the force between them?

Answer 4

Increases

Question 5

What theory is the foundation of our understanding of what makes a magnet work?

Answer 5

Domain theory

Question 6

Strong, permanent magnets are usually

______?_______.

Answer 6

Ferromagnetic

Question 7

An easily magnetized object will probably be [a)temporary] or [b) permanent].

Answer 7

A) Temporary

Question 8

True or false: Magnetically hard material makes up permanent magnets.

Answer 8

True

Question 9

What is a device that produces a strong magnetic field when electricity runs through it?

Answer 9

Electromagnet

Question 10

At what temperature do ferromagnetic substances’ domains disappear?

Answer 10

Curie point

Question 11

What force changes the path of a charged particle moving through a magnetic field?

Answer 11

Deflecting force

Question 12

What are the regions of a magnet in which the magnet’s attractive properties are concentrated?

Answer 12

Poles