earth and space choice board

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Across
  1. 7. dome layers of rock peel off the main body of the rock.
  2. 8. as sediment is transported from its source to where it is deposited, the particles collide with each other and with other objects in their path.
  3. 9. parent material has been carried from elsewhere and deposited.
  4. 11. pieces of the rock collide with each other due to transportation by wind, ice, water and gravity
  5. 13. occurs when oxygen from the air combines with iron-rich minerals of the rock.
  6. 14. sedimentary are formed when water dissolves minerals and deposits them elsewhere
  7. 15. action water freezes in a crack of the rock surface, expanding and splitting the rock.
  8. 16. the physical and chemical breakdown of rocks at or near the surface.
  9. 17. The tendency for currents of air or water to separate sediments according to size
  10. 18. material being transported and relocated in a different landmass
  11. 19. rocks are produced by mechanical weathering and are classified by grain size, sorting and angularity.
Down
  1. 1. mechanical or physical breakdown of rock into smaller pieces, without a change in the mineral's composition
  2. 2. chemicals break down rock through a change in the mineral's composition
  3. 3. soil is formed from the parent material and is of the same composition.
  4. 4. are formed by the action of organisms as they build shells and other body parts by extracting chemical components from the water in which they live.
  5. 5. the process of "gluing" the compacted minerals together by minerals that filter down through the sediment
  6. 6. water combines with minerals such as mica and feldspar found in granite, to form clay, the rock weakens and crumbles apart.
  7. 7. is wearing away of soil or rocks by water, wind or ice
  8. 10. occurs when water combines with carbon dioxide in the air to form carbonic acid.
  9. 12. the process of removing empty spaces between minerals by the weight overlying sediment