Changing faces of the earth

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Across
  1. 5. : rocks that have been changed due to heat and pressure
  2. 8. : silicon and magnesium
  3. 10. : love waves , horizontally polarized waves
  4. 13. : sial and sima
  5. 14. : silicon and aluminium
  6. 16. : an aggregate of minerals
  7. 18. : asthenosphere
  8. 19. : magma to igneous to sedimentary to metamorphic
  9. 20. : a movement of tectonic plates that causes vibration on the earth's crust
Down
  1. 1. : forces that originate inside the earth's surface
  2. 2. : a naturally occurring substance having a fixed chemical composition
  3. 3. : primary waves , compressional waves that are longitudinal in nature
  4. 4. : inner core , outer core
  5. 6. : the point on the earth's surface where the intensity of the earthquake is most felt
  6. 7. : crust , mantle , core
  7. 9. :secondary waves , a surface wave that has a horizontal motion that is transverse
  8. 11. : forces that originate on the earth's surface
  9. 12. : an opening on the earth's crust that allows magma to flow out
  10. 14. : accumulation of sediment substances
  11. 15. : solidification of magma
  12. 17. : point of origin of the earthquake