Physical Science Chapter 16 Magnetism

Vocabulary Words	Objective Questions
16-1  What is magnetism?	page 470
magnetic field magnetic domain magnetosphere compass	How many poles do magnets have? How do the poles interact? How can we detect a magnetic filed? How is a magnet formed? Is the north pole always in the same place? Explain.
16-2  Electricity and Magnetism	page 477
electromagnet motor aurora generator alternating current direct current transformer superconductor	How do you make an electromagnet?  Draw a picture. What are electromagnets used for? What does a magnetic field do? How are motors and generators different? What causes auroras? What are the two types of currents? What is the purpose of transformers? What are superconductors used for? What is an MRI? Why can we make MRI's?