Different landforms and processes involved in their formation

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Across
  1. 4. sometimes called "gorge", deep ravine between cliffs
  2. 7. was discovered by a croatian seismologist Andrea Mohorocivic
  3. 8. created from exclusively erotional and weathering activites
  4. 10. predominantly silt-sized sediment formed by the accumulation of windblown dust
  5. 11. largest layer of the earth
  6. 12. also known as table lands or flat topped mountains
  7. 14. small mounds of hills and sand
  8. 16. circulating effect
  9. 18. protects us from harmful radiation from the sun
  10. 19. are formed by the chmical and mechanical action of the wind
  11. 20. has a flat topped hill and steep sides
Down
  1. 1. also called as a rock pedestral
  2. 2. are those that rise higher than the rest of their surroundings
  3. 3. is a low lying area of land situated between hills or mountains
  4. 5. elevated portions of lands that are formed by faulting
  5. 6. defined as the natural physical features of the earth
  6. 9. believed to be the responsible for different rock behaviors within the mantle
  7. 13. are landforms controlled by gelogoical processes
  8. 15. the last and inner most layer of the earth
  9. 17. are flat and broad land areas and great changes in elevation