Science crossword puzzle

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Across
  1. 4. - flat and broad land areas.
  2. 5. - outermost layer of the earth.
  3. 7. - Latin word which means "almost island"
  4. 8. - they are smaller mountains
  5. 10. - flat-topped mountains.
  6. 13. - study of the current terrain features of a region.
  7. 14. - deep ravine between cliffs
  8. 16. - small hills made up of sand.
  9. 17. - scientific study of landforms and the process that shapes them.
  10. 19. - is a bend in a sinouos watercourse of river.
  11. 20. - landforms that underwent sedimentation, erosion or deposition on the river bed.
Down
  1. 1. - slit-sized sediment formed by the accumulation of windblown dust
  2. 2. - high rocky coasts that plunge down the edge of the sea
  3. 3. - is almost similar to mesa
  4. 6. - low-lying area of land situated between hills or mountains.
  5. 9. - outer solid part of the planet.
  6. 11. - landforms that are controlled by geological process that form them and continually act on them after their formation.
  7. 12. - last and innermost layer of the earth.
  8. 15. - the largest layer of the earth.
  9. 18. - is the study of the flow of matter primarily in the liquid state.