tectonic hazards by oli

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Across
  1. 5. A sudden violent shaking of the ground
  2. 6. Supercontinent that existed on the Earth millions of years ago
  3. 8. A current in a fluid that results from convection
  4. 10. A layer inside a planetary body bounded below by a core and above by a crust
Down
  1. 1. A tectonic boundary where two plates are moving away from each other
  2. 2. Are the edges where two plates meet
  3. 3. Are volcanic regions thought to be fed by underlying mantle
  4. 4. A dark fine-grained volcanic rock
  5. 7. A rupture in the crust of a planetary-mass object
  6. 9. It is very hot, very dense and it's at the center of our planet