Chapter 8 Crossword

Edit Answers
123456789101112131415161718192021
Across
  1. 2. a seismic wave that travels along the surface of earth
  2. 3. a fracture in earth along which movement has occurred
  3. 5. the point within the earth where an earthquake originates
  4. 7. a small earthquake that follows the main earthquake
  5. 12. the solid innermost layer of earth about 1220 kilometers in radius
  6. 13. vibrations that travel through earth carrying the energy released during an earthquake
  7. 15. the location on earth’s center directly above the focus, or origin of an earthquake
  8. 16. a Japanese word for seismic sea wave
  9. 17. the 2890-kilometer-thick layer of earth located below the crust
  10. 18. a more precise measure of earthquake magnitude than the richter scale, which is derived from the amount of displacement that occurs along a fault zone and estimates the energy released by an earthquake
  11. 21. the rigid outer layer of earth including the crust and upper mantle
Down
  1. 1. a weak plastic layer of the mantle situated below the lithosphere; The rock within this zone is easily deformed
  2. 2. a seismic wave that shakes particles perpendicular to the direction of the wave traveling
  3. 4. a phenomenon, sometimes associated with earthquakes, in which soils and other unconsolidated materials saturated with water are turned into a liquid that is not able to support buildings
  4. 6. a layer beneath the mantle about 2260 kilometers thick; The outer core contains liquid iron and generates earth’s magnetic field
  5. 8. the thin, rocky outer layer of earth
  6. 9. an area along the fault where there has not been an earthquake activity for a long period of time
  7. 10. the mohorovicic discontinuity, which is shortened to moho; It is the boundary separating the crust from the mantle, discernible by an increase in the velocity of seismic waves
  8. 11. earthquake that pushes and pulls rocks in the direction of the wave: also known as a compression wave
  9. 14. an instrument that records seismic waves
  10. 19. tendency for deformed rock along a fault to spring back to its original shape after an earthquake
  11. 20. the vibration of earth produced by the rapid release of energy