PLATE TECTONICS AND SEAFLOOR SPREADING

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Across
  1. 4. melted rock on Earth’s surface.
  2. 5. the layer of Earth between the core and the crust; the mantle contains the lower part of the
  3. 7. plate
  4. 8. The point of origin of an earthquake
  5. 10. The border between two tectonic plates.
  6. 12. boundary where two plates slide past one another
  7. 13. Boundary where two plates spread apart
  8. 16. Hard and rigid, the earth's outermost and thinnest layer
  9. 17. A dropped zone where two tectonic plates are pulling apart.
  10. 18. landslide, or volcanic eruption
  11. 19. and all of the asthenosphere
Down
  1. 1. the solid outer part of Earth that includes the crust and upper mantle.
  2. 2. melted rock beneath Earth’s surface
  3. 3. A crack or fracture in Earth's crust where two tectonic plates grind past each other in a horizontal direction
  4. 6. The point on earth’s surface that is vertically above the focus of an earthquak
  5. 7. boundary where two plates come together
  6. 9. a straight line of travel where data is being collected
  7. 11. supercontinent from 225+M years ago
  8. 12. A deep valley that forms at the edge of a continent when an oceanic plate sinks underneath a
  9. 14. A huge ocean wave caused by a sudden, powerful shift on the ocean floor, like an undersea
  10. 15. the outermost layer of Earth