Across
- 6. the outermost shell of a terrestrial planet
- 8. plates that slide past one another
- 9. a fracture or zone of fractures between two blocks of rock
- 10. plates that divide
Down
- 1. large, seismically active submarine ridge system
- 2. a place where two plates meet
- 3. hot fluid below the earth's crust
- 4. plates that collide
- 5. slow creeping motion of earth's mantle
- 7. a crack or split in the earth's crust
- 8. a massive irregularly shaped piece of the earth