Earth & Space/ earthquakes

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Across
  1. 2. deformation of material in response to stress
  2. 4. Earth's surface directly above the focus
  3. 7. waves are much slower & does more destruction
  4. 9. a fracture or a weak zone between rocks.
  5. 11. compression movement & vertical
  6. 12. force acting on crustal rock
Down
  1. 1. decreases the volume of a material
  2. 2. waves slower than primary
  3. 3. tension and downward
  4. 5. pulls the material apart
  5. 6. waves straightens when pulled like a coil wire
  6. 7. horizontal movement in opposite directions
  7. 8. point of failure where the waves originate
  8. 10. causes the material to twist