| A | B |
|---|
| lithosphere | In the Theory of Plate Tectonics, Canadian scientist John Tuzo Wilson proposed that the ________ is broken into sections, called plates. |
| continents | Plates carry the ________and/or parts of the ocean floor |
| moving | The theory of plate tectonics states that pieces of Earth’s lithosphere are slowly but constantly _________ . |
| mantle | The motion of convection currents in the ________ drives plate movement. |
| beneath | Convection currents can lead to subduction, the process of one plate sliding ________another. |
| 2.5 | The plates on Earth are constantly moving at a rate of about ________ centimeters per year |
| Gravity | ________ pulls the leading edge of one plate down into the mantle. |
| crust | In a transform boundary ________ is neither created nor destroyed. |
| rift valleys | Divergent boundaries can form mid-ocean ridges and _________ |
| toward | A convergent boundary occurs where two plates move ________ each other. |
