Magnetism

1
Magnetism

• A Chapter 23 Learning Experience

2
Introduction

• Pre-Assessment
• Predicting A B Cs / Vocabulary Rating Sheet /
  Target Your Reading
• What is magnetism?
• Electricity and Magnetism
• Post-Assessment

3
What is magnetism?

• Engage/Explore Activity with Magnets
• Magnetic Poles
• Magnetic Fields
• What is the biggest magnet in the world?
• How are magnets and static charges similar?
  Different?
• How are magnetic forces compared to gravitational
  forces?
• From your activity diagram the magnetic field
  produced from a bar magnet.

4
What makes a magnet a magnet?

• What makes magnets?
• Domains
• Induced magnetism
• Permanent Magnets
• Can you make a permanent magnet?
• What do you get if you break a bar magnet in 3
  pieces?

5
More on magnetism

• How does a compass work?
• What are the Van Allen Belts and what do they do?
• Puzzled?

Van Allen Belts
North
Earth
magnet
Force
Poles
Compass
South
Field
6
Earths Magnetic North Pole, Where is it?
7
Assessments

• Mapping Magnetic Fields lab and activity
• Section 1 Review pg. 671 all w/ QARs
• Make your own compass activity.

8
Electricity and Magnetism

• Can you make a temporary magnet?
• How?
• Can you increase the force of the magnetic field?
  
• How?
• Electromagnet Lab Relate electricity to
  magnetism
• Right Hand Rule

9
Effects of Magnetic Fields

• Remember Electricity?
• Magnetism and Electric Currents
• Can an electric current INDUCE MAGNETISM?
• Can a magnetic field INDUCE A CURRENT?
• How? Lets try.
• AC/DC

10
Demonstrations in Magnetism

• Compare and contrast electric generators and
  electric motors
• Electric motor project
• Generator demo.
• Transformers
• Section 1 Review 1-5 Pg. 683 w/ QAR
• Maglev video

11
Recap and review

• Revisit Pre-Assessment, Predicting A B Cs /
  Vocabulary Rating Sheet / Target Your Reading
• Inspiration activity All vocabulary words
• Jeopardy Review
• Assessment Post- Assessment