PLATE TECTONICS

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Across
  1. 2. supercontinent formed 250 million years ago
  2. 6. a weaker place in the middle of a plate where magma comes up and volcanoes form
  3. 9. the place where the earthquake is felt at the surface
  4. 10. a scale that measures the strenght of an earthquake
  5. 13. the flow of magma in the mantle that causes plates to move
  6. 17. a big space filled with magma under the volcano
  7. 18. boundary where two plates move apart
  8. 20. when lava escapes the volcano via a weaker spot in the volcano
  9. 21. the ocean around which we can find the ring of fire
  10. 22. a famous example of a transform boundary in the USA
Down
  1. 1. the continental plate is made from this material
  2. 3. in this part of the mantle, convection currents take place
  3. 4. the combination of the crust and the solid part of the mantle
  4. 5. this plate is the thinnest
  5. 7. a big wave formed when an earthquake takes place in the water
  6. 8. short-term help given when a disaster took place
  7. 11. at this boundary one can find explosive volcanoes
  8. 12. this formed in the middle of the ocean at the divergent boundary
  9. 14. the process in which one plate goes underneath the under
  10. 15. magma at the earth's surface
  11. 16. when a volcano explodes, it is called an ...
  12. 19. a scale that measures the damage an earthquake causes