1. Physics A First Course
Electricity and Magnetism
Chapter 16

2. Electricity and Magnetism Magnetism
16.1 Properties of Magnets
16.2 The Source of Magnetism
16.3 Earth's Magnetic Field

3. 16A Investigation: Magnetism
Key Questions:
What are the effects of magnetism?
What kinds of materials are affected by magnetic force?
*Students read text section 16.1
AFTER Investigation 16A

4. 16A Investigation Topics
Measure magnetic force.
Use a compass to detect magnetic force.
Test magnetic properties of various materials.

5. Chapter 16.1 Objectives and Vocabulary
Recognize that magnetic poles always exits in pairs.
Decide whether two magnetic poles will attract or repel.
Describe the magnetic field and forces around a permanent magnet.
magnetic
permanent magnet
magnetic poles
magnetic field
magnetic field line

8. Chapter 16.2 Objectives and Vocabulary
electromagnet
right-hand rule
diamagnetic
paramagnetic
ferromagnetic
magnetic domain
soft magnet
hard magnet
Learn how to build a simple electromagnet and change its strength.
Use the right-hand rule to locate an electromagnet's poles.
Explain the source of magnetism in materials.

9. Right-Hand Rule
If the fingers of your RIGHT hand curl in the direction of the current, your thumb points toward the north pole.

10. Where is the north and south pole?

12. 16B Investigation: Electromagnets
Key Question:
Can magnetic force be created?
*Students read text section 16.3
AFTER Investigation 16B

13. 16B Investigation Topics
Make an electromagnet.
Use a compass to detect magnetic force.
Build a circuit to control and electromagnet.
Measure current used by an electromagnet.
Test different arrangements of an electromagnet.

14. Chapter 16.3 Objectives and Vocabulary
Explain how a compass responds to a magnetic field.
Describe the cause of Earth's magnetism.
Recognize the difference between Earth's magnetic and geographic poles.
Explain how a compass is used to indicate direction.
compass
magnetic declination
gauss