2. Alfred Wegener: Noticed similarities in the shoreline of continent on both sides of the Atlantic Ocean, he then began fitting them together. Introduced the hypothesis of continental drift. Suggested a supercontinent, called Pangaea (meaning "all land"), that broke up millions of years ago, slowly moved to their current positions, and continue to move today.

7. DIVERGENT- When two plates move away from each other. Characteristics: Mid – ocean ridges (underwater mountain ranges) Rift Valleys (narrow valleys that form where plates separate), Newest rock material (cooling magma forms new oceanic crust).

8. DIVERGENT Ex: Seafloor Spreading

9. CONVERGENT – When two plates collide. Characteristics: Mountains, most earthquakes, Volcanoes, and trenches 1.ocean – ocean 2.ocean – continent 3.continent – continent CONVERGENT

13. TRANSFORM – When two plates are moving past each other. Characteristics: San Andreas Boundary

14. The Pacific plate and North American plate grind past each other side by side.

16. AREA WITHIN A PLATE WHERE MAGMA WORKS ITSELF TO THE SURFACE ARE CALLED HOT SPOTS. HOT SPOTS ARE STATIONARY SO WHEN THE PLATE ABOVE IT MOVES A NEW VOLCANOE FORMS.