Plate Tectonics

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Across
  1. 2. tectonics states earth's surface is made up of giant, moving slabs called tectonic plates.
  2. 3. The process of a less dense plate sinking below a more dense plate.
  3. 7. plates The lithosphere is divided into large moving pieces
  4. 8. the layer that is semi-solid and immediately below the lithosphere.
  5. 10. boundary when tectonic plates move toward each other and collide.
  6. 11. boundary When 2 tectonic plates moving past one another in opposite direction.
Down
  1. 1. spreading process of new seafloor forming.
  2. 4. drift the hypothesis that today's continents were once apart of a single land mass.
  3. 5. the outermost physical layer of the earth
  4. 6. boundary When 2 tectonic plates move away from one another
  5. 9. a system of ideas that explains many related observations about the natural world.