Plates Vocab Review

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Across
  1. 2. large moving pieces of Earth's lithosphere that rest on the asthenosphere
  2. 5. the type of boundary along which two tectonic plates move away from each other
  3. 6. scientists use this to measure earthquakes
  4. 8. the shaking and trembling of the Earth's crust
  5. 9. the make up of a substance
  6. 10. the process by which denser crust sinks beneath less dense crust
  7. 11. proposed the theory of Continental Drift
  8. 12. consists mostly of iron, nickel, and sulfur
  9. 13. supercontinent that included all of the landmasses on Earth
  10. 16. the type of boundary which two tectonic plates scrape past each other
Down
  1. 1. the type of boundary along two tectonic plates move toward each other
  2. 3. layer of hotter, softer rock in Earth's upper mantle
  3. 4. molten rock, before it reaches Earth's surface
  4. 7. made up of the crust and the cool, rigid part of the upper mantle
  5. 9. continents were once joined together but moved apart over time
  6. 14. thin layer of cool rock that surrounds Earth like an eggshell
  7. 15. magma on the Earth's surface
  8. 17. thickest layer of Earth