Weathering

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Across
  1. 2. fluid can flow into the rock
  2. 4. geologic processes that occur today are similar to the past
  3. 5. caused by chemical reactions
  4. 7. process of breaking big rocks into little ones
  5. 10. underground portion of a plant that lacks buds, leaves, or nodes
  6. 12. carbon dioxide reacts with carbonate minerals found in rock
  7. 14. weather conditions in an area
  8. 15. animals dig into the ground and loosen the soil
  9. 16. pebbles grind along a rock platform
Down
  1. 1. breakdown of rock by acidic water to produce clay and salts
  2. 3. physical weathering that involves the repeated freezing and thawing of water in cold weather
  3. 6. the process of being worn by long exposure to the atmosphere
  4. 8. separation of spalls from massive rock
  5. 9. precipitation that contains high levels of nitric and sulfuric acids
  6. 11. earthen materials are worn away by natural causes
  7. 13. oxygen combines with another substance and creates compounds called oxides