Across
- 5. exploded with fire and noise
- 6. center, inner most part of the earth
- 9. the study of earth's physical features
- 10. people who study earth's physical features
- 12. zone of frequent volcanic and seismic activity surrounding the Pacific Ocean
- 13. not currently erupting but could erupt again
Down
- 1. interrupted
- 2. massive slab of rock that makes up earth's outer most layer
- 3. people who excavate sites to study human history
- 4. relating to the study of earth's physical features
- 6. outer most layer
- 7. the act of erupting
- 8. molten rock that is underground
- 11. explode with fire and noise