Chapter 6 Plate Tectonics

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Across
  1. 4. The Earth's thickest layer.
  2. 5. Underwater mountain ranges.
  3. 7. When one plate sinks beneath another.
  4. 10. States that the Earth's lithosphere is made up of huge plates that move over the surface of the Earth.
  5. 13. Occurs where plates scrape past each other.
  6. 15. A gap that is formed where the ocean floor spreads causing a gap.
  7. 16. Where heated rocks rise in plumes, or thin columns.
  8. 19. A motion that transfers heat energy in a material.
  9. 20. A thin layer of cool rock.
Down
  1. 1. A ball of hot, solid metals.
  2. 2. Alfred Wegener's hypothesis.
  3. 3. Comes from the Greek word meaning all lands.
  4. 6. Is the energy transfer by the movement of the material.
  5. 8. comes from the Greek word asthenes and means weak.
  6. 9. Occurs where plates move apart.
  7. 11. A layer of liquid metals that surrounds the inner core.
  8. 12. Occurs where plates push together.
  9. 14. A poles switch in direction.
  10. 17. Large and small slabs of rock.
  11. 18. has the greek prefix meaning stone.