| A | B |
|---|
| plates | lithosphere is broken into separate sections called ___________. |
| Ring of Fire | Pacific plate boundary |
| plate tectonics | the geological theory that states that pieces of Earth's lithosphere are in constant, slow motion, driven by convection currents in the mantle. |
| theory of plate tectonics explains... | the formation, movement, and subduction of Earth's plates |
| transform boundaries | a place where two plates slip past each other, moving in opposite directions |
| divergent boundary | Iceland |
| rift valley | a deep valley that forms along the divergent boundary |
| Africa | the continent where the Great Rift Valley is located |
| convergent boundaries | the place where two plates come together |
| Pangaea | the great supercontinent 260 or so million years ago |
| Wegener | the scientist that hypothesized about a great superconinent |
| paleomagnetism | evidence of sea-floor spreading |
| collison of two continental plates | Himalayan Mountains |
| active continental margin | steep slope, trench, subduction |
| passive continental margin | shelf, slope, rise, |
| seamounts | underwater volcanic structures |
| abyssal plain | flattest features on earth |
| Pacific Ocean | largest tectonic plate |
| San Andreas Fault | transform boundary |
| northwest | direction of movement of the Pacific plate |
