Seafloor Spreading Crossword

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Across
  1. 3. underwater mountain range, formed by diverging tectonic plates; largest volcano system on Earth
  2. 6. a phenomena in which magma comes up at the mid-ocean ridge and creates new oceanic crust
  3. 8. solid,thin, outer layer of Earth- can be oceanic or continental
  4. 9. huge piece of crust that slowly moves on the upper, ductile part of the mantle
  5. 10. deep and narrow depression in the seafloor where the subducted plate moves into the asthenosphere
Down
  1. 1. molten(melted)rock, beneath Earth's surface: cools to form rocks with crystals
  2. 2. a place where two tectonic plates move toward each other
  3. 4. the place where two tectonic plates move away from each other
  4. 5. the process in which a denser plate is pushed beneath a less dense plate when two plates converge
  5. 7. a depression of Earth's surface in which an ocean lies