Living on the Edge Revision

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Across
  1. 3. Type of volcano with convex, shallow slopes
  2. 4. Two plates of crust moving apart
  3. 5. Two plates of crust moving together
  4. 7. Under tectonic plates; sludgy liquid under extreme heat and pressure
  5. 9. Crust is part of the zone called the ___
  6. 11. Hot things rise to surface then fall to core, therefore the Earth’s crust is constantly ____
  7. 12. Gigantic super-continent 200 million years ago
  8. 14. Volcanic activity releases surges of ___ into the atmosphere
  9. 16. Living things
Down
  1. 1. ___of sediment showed the age of sea floor
  2. 2. Waterways
  3. 6. two plates of crust grind past each other without destruction
  4. 8. ___flow is the motion of matter resulting from change in temperature
  5. 10. ____plumes are masses of hot mantle material that ascend towards the surface causing igneous activity
  6. 13. Type of volcano with concave, steep, sloping sides
  7. 15. Because it is so dense, oceanic lithosphere always ___