Earth Science Crossword

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Across
  1. 3. core- the layer below the mantle
  2. 8. ridge- the region where magma breaks through Earth's surface, continually forcing apart old rock and forming new rock
  3. 11. belt- a long chain of volcanoes
  4. 13. the point on Earth's surface directly above the focus
  5. 14. the crust and upper portion of the upper mantle
  6. 15. plates- plates that collide
  7. 16. an area where molten rock rises to the earth's surface
  8. 17. plates- plates that are spreading apart
  9. 18. the molten layer of the upper mantle
Down
  1. 1. the action of one plate pushing below another
  2. 2. push- when old cooled magma is pushed aside by new molten lava from below
  3. 4. a deep underwater valley that is formed when a oceanic plate collides with a continental plate and is forced to slide beneath it
  4. 5. valley- a spreading centre on land, less common
  5. 6. breaks in rock layers due to movement on either side
  6. 7. core- mostly solid iron, at tremendous temperature and pressure
  7. 9. the shaking of the Earth's surface resulting from the release of accumulated energy caused by the movement of tectonic plates
  8. 10. an opening in Earth's surface that, when active, spews out gases, chunks of rock, and melted rock
  9. 12. fault- a fault that occurs at a transition plate boundary
  10. 19. boundary- an area where two plates are in contact