ligma

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