Tectonic Plates and the Pacific Ring of Fire

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Across
  1. 4. Volcanoes are formed when(what)occur
  2. 6. What do we call the fragments or pieces of the earth's crust?
  3. 7. What was the name of earth's continent before it split up?
Down
  1. 1. When two plates are moving away from each other
  2. 2. What do we call the outer layer of earth?
  3. 3. What will be formed if 2 Tectonic plates with the same thickness collide together?
  4. 5. What type of plate is the pacific plate?
  5. 8. What is the second plate which the ring of fire encircle?