Plate tectonics, internal structure of earth and earthquake

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Across
  1. 2. overlies a plastic layer
  2. 7. a line of volcanoes above the melting aceanic
  3. 9. the majority of the mantle from the core-mantle boundary is solid
  4. 11. first major discontinuity occurs at a depth of 30-40km below the continents
  5. 12. it lies at the centre of the earth it is denser than the mantle
  6. 14. it is occurs within earth's interior at a depth of about 2900km (1800) below the surface
  7. 17. they always slowly moving, but they get stuck at their edges due to friction seismic the wave of energy caused by the sudden breaking or rock within the earth or by an explosion
  8. 19. found along divergent
  9. 20. dense and extending to a depth of 2900km
Down
  1. 1. continent-continent convergent boundary example in
  2. 3. shaking of ground focus point of origin of earthquake
  3. 4. ir is mountain range of Western South American
  4. 5. earth has rigid outer layer
  5. 6. where plates slide passed each orther
  6. 8. where two separate plates are pushing into each other
  7. 9. range
  8. 10. they rolls along the ground just like a wave rolls across a lake or an ocean
  9. 13. plates move relative to each other
  10. 15. where two plates are moving apart
  11. 16. outermost layer of earth mantle below the crust lies
  12. 18. boundaries