This terms work

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Across
  1. 3. Canyon - A steep-sided canyon carved by the Colorado River
  2. 5. forms - a natural feature of the earth's surface.
  3. 6. - a big rock
  4. 8. - clearing a large area of trees
  5. 10. - geological process in which sediments, soil and rocks are added to a landform or land mass
  6. 11. map - a map marked with contour lines.
  7. 14. - being eroded by wind, water, or other natural agents
Down
  1. 1. - a danger or risk
  2. 2. - wear away or change the appearance or texture of something by long exposure to the atmosphere.
  3. 4. Plate - a massive, irregularly shaped slab of solid rock
  4. 7. - visible features of an area of land
  5. 9. quake - a sudden violent shaking of the ground, typically causing great destruction, as a result of movements within the earth's crust or volcanic action.
  6. 12. - an overflow of a large amount of water beyond its normal limits
  7. 13. - The colour of uluru