Plate Tectonics

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Across
  1. 2. Secondary waves
  2. 5. The outer portion of the mantle
  3. 8. One plate sinks under the other
Down
  1. 1. Primary waves
  2. 3. Rock layers are bent or curved
  3. 4. eruption The giving off of gases
  4. 6. plate Moves earths solid surface
  5. 7. The sudden release of energy in earths crust
  6. 9. Forms mountains
  7. 10. trench Long depression that wraps the crust