| Across | Down |
| 4. to crash into COLLIDE | 1. a layer of molten rock beneath Earth's crust MANTLE |
| 6. the length of time that something lasts DURATION | 2. a border or an edge BOUNDARY |
| 7. a tool that records movements in Earth's crust SEISMOMETER | 3. large sections of Earth's crust PLATES |
| 8. a break in Earth's crust where blocks of rock are moving in different directions FAULT | 5. to act on one another INTERACT |
