Plate tectonics, internal structure of earth and earthquake

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