| A | B |
|---|
| Alfred Wegener | proposed continental drift theory |
| Harry Hess | proposed sea floor spreading theory |
| convergent boundary | colliding boundary |
| divergent boundary | pulling apart |
| transform boundary | sliding past each other (shear) |
| trench | formed by subduction movement |
| subduction | ocean material moves down at continental boundary |
| sea floor spreading | ocean pulling apart @Mid ocean |
| continental-continental | land-land collision |
| continental-ocean | ocean-land collision |
| ocean-ocean | forms volcanic arc& hot spots |
| mid ocean ridge | long mountain chain |
| rift valley | elongated crack found when crust splits |
| San Andreas fault | best example of transform fault |
| Normal Polarity | magnetism pointing to True N |
| Pangaea | "all land mass" |
| Volcanic Arcs | Aleutians, Hawaiian Islands |
| Reverse Polarity | Magnetism switching to S |
| Glossopteria | ancient fossil fern found in S.A. & Africa |
| Lauria | Large land mass of Europe & Asia |
