Plate Tectonics

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Across
  1. 1. A break in Earth's crust along which rocks move
  2. 7. A plate boundary where two plates move past each other in oppsite directions
  3. 9. The transfer of thermal energy by the movement fluid
  4. 10. The theory that pieces of Earth's lithosphere are in constant motion, driven by convection currents in the mantle.
  5. 12. A string of volcanoes that form as the result of subduction of one oceaic plate benath a second oceanic plate
  6. 14. The process by which oceanic crust sinks beneath a deep ocean treach and back into athe mantle at a convergent plate boundary
  7. 16. The transfer of energy by electromagnetic waves
  8. 17. The name of th esingle landmass that began to break apart 200 million years ago and gave rise to today's continenets
  9. 19. The preserved remains or traces of an organism that lived in the past
  10. 21. A plate boundary where two platemove away from each other
  11. 22. The molten mixture of rock forming substances, gasses, and water from the mantle
  12. 23. A plate boundary where two plates move toward each other
  13. 24. The transfer of thermal energy from one particleof matter to another
  14. 25. A section of the lithospher that slowly moves over the asthenosphere, carrying pieces of continental and oceanic crust
Down
  1. 2. The process by which molten material adds nre oceanic crust to the ocean floor
  2. 3. An area where magma from deep within the manlts through the crust above it
  3. 4. The hypothesis that the continents slowly move across Earth's surface
  4. 5. The movement of a fluid, caused by differences in temperature, that transfers heat from one part of the fluid to another
  5. 6. Liquid magma that reaches the surface
  6. 8. The measurement of how much mass of a substance is contained in a given volume
  7. 11. An undersea mountain chain where new ocean floor is produced; a divergent plate boundary under the ocean
  8. 13. A deep valley that forms where two plates move apart
  9. 15. A deep valley along the ocean floor beneath which oceanic crust slowly sinks toward the mantle
  10. 18. A weak spot in the crust where magma has come to the surface
  11. 20. A major belt of volcanes that rims the Pacific Ocean