Geology Crossword

123456789101112
Across
  1. 1. fracture zone between two block of rock
  2. 4. branch of science concerned with earthquakes
  3. 6. the first wave to arrive in an earthquake
  4. 8. hot fluid; magma
  5. 9. a numerical scale for expressing the magnitude of an earthquake
  6. 11. inactive
Down
  1. 2. a rumble deep down that shakes buildings
  2. 3. the point on the surface vertically above the focus of earthquake
  3. 5. massive fault in California
  4. 7. the third wave to arrive in an earthquake
  5. 10. a collision between two of Earth's tectonic plates, where one plate sinks into the mantle underneath the other plate.
  6. 12. stress that pulls rock apart in opposite directions