Earthquakes and Volcanoes

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Across
  1. 2. a measurement of a liquids resistance to flow
  2. 6. mudflow from a volcano
  3. 8. a volcano that forms from ejected blobs and pyroclastic fragments
  4. 9. the origin of an earthquake beneath the surface
  5. 11. an instrument used to detect the ground shaking in an earthquake
  6. 12. a volcano that forms from alternating layers of lava and tephra
Down
  1. 1. a scale that measures the amount of energy released in an earthquake.
  2. 3. a scale that measures the size of the seismic wave.
  3. 4. a wave that can travel through both liquids and solids
  4. 5. Destructive mass of very hot ash, lava fragments, and gases ejected explosively from a volcano and typically flowing downslope at great speed.
  5. 7. the spot directly above the focus on the surface.
  6. 10. a wave that can not travel through liquids
  7. 11. a volcano that forms from basaltic lava flows