Across
- 5. the upper layer of the mantle, below the lithosphere
- 6. hot mantle rising up from underground
- 7. fragments of volcanic rock
- 8. two tectonic plates that move away from each other
Down
- 1. a scientist that studies volcanos
- 2. hot liquid rock underground
- 3. chunks of molten lava shot out from volcanos
- 4. sends jets of steam and hot water from the ground