Plate tectonics Assignment

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Across
  1. 2. when two plates slide against each others
  2. 4. The point of origin of an earthquake
  3. 7. when two plates move apart
  4. 9. A collisional boundary occurs where two land masses on plates are pushed together
  5. 11. melted rock beneath Earth's surface
  6. 12. the melted rock on Earth's surface
  7. 13. A dropped zone where two tectonic plates are pulling apart.
  8. 14. the outermost layer of earth
  9. 15. is formed when very hot rock rises through mantle and erupt through Earth's crust
  10. 17. a slowly flowing layer of solid and melted rock formed by heat and pressure
  11. 19. The point on earth’s surface that is vertically above the focus of an earthquake
Down
  1. 1. A huge ocean wave caused by a sudden, powerful shift on the ocean floor
  2. 3. The name given to the supercontinent that existed more than 225 million years ago
  3. 4. A crack or fracture in Earth's crust where two tectonic plates grind past each other in a horizontal direction
  4. 5. Any of various instruments for measuring and recording the vibrations of earthquakes
  5. 6. when one plate slides under another plate
  6. 8. The upper part of the Earth including the crust and upper mantle
  7. 10. the layer of Earth between the core and the crust
  8. 16. A deep valley that forms at the edge of a continent when an oceanic plate sinks underneath a continental plate.
  9. 18. a trembling or shaking of the earth surface results in sudden surge of energies from Earth's crust