| A | B |
|---|
| a. asthenosphere | plastic-like layer below the lithosphere |
| b. continental drift | Theory that states the continents were once part of 1 large land mass. |
| c. convection current | what drives plate motion |
| d. convergent boundary | plate boundary where plates are coming together |
| e. divergent boundary | Plate boundary where plates are moving apart |
| g. magnetometer | instrument for studying Earth’s magnetic field |
| h. Pangaea | Wegener's "supercontinent" |
| j. plates | large sections of the earth's crust |
| k. seafloor spreading | theory that states ocean crust is formed at and moving away from ocean ridges |
| m. transform fault | place where plates slide past one another |
