Chapter 5 Vocab Crossword Puzzle

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Across
  1. 2. A plate boundary where two plates move past each other in opposite directions.
  2. 5. A plate boundary where two plates move toward each other.
  3. 7. A string of volcanoes that form as the result of subduction of one oceanic plate bneath a second oceanic plate
  4. 10. A break in Earth's crust along which rocks move.
  5. 11. The name of the single landmass that began to break apart 200 million years ago and gave rise to today's continents.
  6. 12. A plate boundary where two plates move away from each other.
  7. 13. The preserved remains of an organism that lived in the past.
  8. 15. An area where magma from deep within the mantle melts though the crust above it.
Down
  1. 1. The process by which molten material adds new oceanic crust on the ocean floor.
  2. 3. The hypothesis that the continents slowly move across Earth's surface.
  3. 4. An undersea mountain chain where new ocean floor is produced; a divergent plate boundary under the ocean.
  4. 6. A deep valley along the ocean floor beneath which oceanic crust slowly sinks towards the mantle.
  5. 8. A deep valley that forms where two plates move apart.
  6. 9. The theory that pieces of Earth's lithosphere are in constant motion, driven by convection currents in the mantle.
  7. 14. The process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary.