physical and chemical weathering

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Across
  1. 5. -the process by which other chemicals combine with oxygen
  2. 7. -when rocks start rusting and there's a change in color
  3. 9. -When sediment and other materials are moved from one place to another
  4. 10. -rocks broken into smaller sediments
  5. 12. -change in both the composition and appearance of rocks
Down
  1. 1. -when stronger acids fall to the earth
  2. 2. -dig and expose more rocks to the surface
  3. 3. -repeated cycles
  4. 4. -large roots add pressure to rocks
  5. 6. -when frozen precipitation falls over an area and seeps into small cracks in rocks and other materials.
  6. 8. -breaking down and wearing away of rock materials by the mechanical action of other rock
  7. 11. -"exoilation"out layer of rock pelling away