1. Chapter 14 Plate Tectonics

2. Continental Drift Theory 1. Fit like a jigsaw 2. Matching fossils 3. Tropical plant fossils in Polar regions. Drift explained climate changes – Coal

3. Skeptics: How did the plates move? Bathymetric measurements Cable Sonar 1947: thin ocean floor? – 4 billion yrs old – Basalt rock – Mid ocean ridge Mid ocean ridge Continental Drift Theory

4. How did they move? Convection – Divergent – Convergent Subduction – Transform Transform

5. Plate Boundaries Earthquakes Volcanoes