Choice board #1

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Across
  1. 3. a break in the earths crust
  2. 5. seismic waves that cause the most damage
  3. 7. a cloud of ash, lava fragments carried through the air, and vapor
  4. 8. a layer of liquid iron and nickel that surrounds the inner core of Earth
  5. 9. consists of fragments of rock, mineral crystals, and volcanic glass
  6. 11. molten rock under the earths crust
  7. 14. a small volcano that forms quickly
  8. 15. a sudden movement of the Earth's crust caused by the release of stress
Down
  1. 1. the study of earthquakes
  2. 2. the thickest layer of the earth between the crust and the core
  3. 4. a volcano that is erupting or has shown signs that it may erupt in the near future
  4. 6. a thin layer of gases surrounding the Earth
  5. 10. a major belt of volcanoes that rims the Pacific Ocean
  6. 12. the resistance to flow
  7. 13. the thinnest layer of the earth