Chapter 
Organize
Learn
Connect
Instructors now have an easy way to collect students’ online quizzes with the Norton Gradebook without flooding their inboxes with e-mails.
Students can track their online quiz scores by setting up their own Student Gradebook.
Chapter 3: Drifting Continents and Spreading Seas
Animations
Click on the links below to view animations created specifically for Earth: Portrait of a Planet. Animations require Macromedia's Flash Plug-in.
Zoomable Art: Magnetic Reversals and Marine Magnetic Anomalies
The Earth behaves like a giant magnet, and thus is surrounded by a magnetic field. The magnetism is due to the flow of liquid iron alloy in the outer core. For more information, see the Section 3.5 Marine Magnetic Anomalies starting on p. 66 and the Featured Painting on pp. 72-73 in your textbook.