PLATE TECTONICS, VOLCANOES, EARTHQUAKES

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Across
  1. 4. Magma may form when this is added to hot rock.
  2. 5. Magma that cools below the Earth's surface forming intrusive igneous rock bodies
  3. 9. One of Earth's major earthquake zones
  4. 12. a form of ductile strain in which rock layers ben, usually as a result of compression
  5. 13. magma rich in magnesium and iron and is commonly dark in color
  6. 14. a seismic wave that causes particles of rock to move in a back and forth direction parallel to the direction the wave is traveling
  7. 15. a measure of the strentgth of an earthquake
  8. 17. commonly form as the result of the collision of tectonic plates
  9. 19. a seismic wave that causes particles of rock to move in a side to side direction perpendicular to the direction in which the wave is traveling
  10. 20. magma that flows onto the Earth's surface
Down
  1. 1. used by scientists to record earthquake vibrations
  2. 2. often caused by ocean-floor earthquakes
  3. 3. a series of mountains that are closely related in orientation, age, and mode of formation
  4. 6. fragments of rock that form during a volcanic eruption
  5. 7. a break in a body of rock along which one block slides relative to another
  6. 8. the bending, tilting, and breaking of Earth's crust; the change in shape or volume of rock in response to stress
  7. 10. the measure of the effects of an earthquake
  8. 11. the point on Earht's surface directly above an earthquake's starting point, or focus
  9. 16. Areas of volcanic activity that are located over rising mantle plumes that can exist far from tectonic plate boundaries
  10. 18. any chain in a rock's shape or volume caused by stress