volcanoes, plate tectonics, and earthquakes

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Across
  1. 5. the shaking that results from the movement of rock beneath earth's surface
  2. 7. point under the surface of the Earth where an earthquake originate
  3. 8. wave which causes rock particles to move in a backward rolling and side to side swaying motion
  4. 10. measure of the energy released by an earthquake
  5. 11. harry hess's theory that new seafloor is formed when magma is forced upward toward the surface at a mid-ocean ridge
  6. 13. a wave produced by an earthquake
  7. 14. ocean wave produced by an earthquake on the ocean floor
  8. 15. breaking in rock caused by tension forces, where rock above the fault surface moves down relative to the rock below the fault surface
  9. 16. the largest intrusive igneous rock bodies are ____________
  10. 19. the worlds most active volcano, located in Hawaii
  11. 21. a theory stating that the earth's surface is broken into plates that move
  12. 24. break in rock caused by shear forces
  13. 26. when magma reaches earth's surface and flows out through an opening called a _________
  14. 27. breaking in earth's crust along which movement occurs
  15. 28. large, ancient landmass that was composed of all the continents joined together
  16. 29. when rocks break they move along surfaces called _____________
  17. 30. an opening in Earth that erupts gases, ash, and lava.
  18. 31. the point on the Earth's surface directly above the focus of an earthquake
Down
  1. 1. seismic wave that moves rock particles back and forth in the same direction that the wave travels
  2. 2. sections of the Earth's upper mantle and crust that move slowly
  3. 3. bits of rock or solidified lava dropped from the air are called___________
  4. 4. current a current in the asthenosphere caused by the rising of heated fluid and sinking of cooled fluid.
  5. 6. the process by which an earthquake's violent movement suddenly turns loose soil into liquid mud
  6. 9. Alfred wegener's theory that continents can drift apart from one another
  7. 11. an instrument that records earthquake waves
  8. 12. break in rock caused by compressive forces
  9. 17. Hot rock at these areas is forced toward the crust where it melts partically to form a __________
  10. 18. the solid, outer layer of the earth that consists of the crust and the upper part of the mantle
  11. 20. a broad volcano with gently slipping sides
  12. 22. the steep-walled depression around the vent is the _________
  13. 23. seismic wave that moves rock particles at right angles to the direction of the wave
  14. 24. when oceanic and continental plates collide
  15. 25. plastic-like layer of the lower mantle on which the lithosphere move