continental drift presentation1
DESCRIPTION
The theory of continental drift and evidence for supporting it.TRANSCRIPT
Continental Drift
Theory of Plate TectonicsAlfred Wegener’s 1915 drawing of Pangaea
Continental Drift
How do Plates Move?
Good Fit
What is some Evidence to support his Theory
Rocks & Mountains
Fossils
Sea Floor Spreading
Age of the Sea Floor
Evidence for the Theory
1. Continental shelves seem to fit together2. Rock units and mountain ranges fit Pangaea3. Fossil types fit Pangaea4. Ocean research uncovered sea floor spreading5. Radio-geology allowed us to date the age of rocks6. Polarity of Rocks-Magnetic Evidence
Why do we Care?
• Curiosity• Explain landforms• Find valuable minerals• Explain and predict potential hazards