TECTONIC PLATES

SUMMARIZER

• Alfred Wegener said that there is Pangea.
• The earth is cracked in many plates.

DISCUSSION DIRECTOR

• Q: Why did Alfred's theory get rejected?
• A: He did not identify the cause.
• Q: What occurs at trenches?
• A: Subduction.
• Q: What creates the faults?

DISCUSSION DIRECTOR

• A: Two continental plates.

CONNECTOR

• The movie Ice Age is about continental drift
• The Atlantic Ocean is spreading like bread cooking
• Sliding boundaries are like 2 cars on a freeway

RESEARCHER

• Pangea formed 500 million years ago.
• Roger reveille discovered sea floor spreading
• Tectonic plates are 60 miles thick

WORD WIZARD

• Pangea: All lands
• Scarce: difficult to get
• Divergent: to move in a different direction