Geology ASSESSMENT review

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Across
  1. 2. type of rock forms when magma cools and hardens
  2. 4. soil helps do this to the water that seeps into the ground
  3. 8. type of material that first exist before soil can form
  4. 9. the type of rock formed by heat and pressure
  5. 11. a very shiny and glass-like igneous rock formed this way
  6. 12. a chemically pure substance
  7. 16. can prevent erosion by practicing soil conservation
  8. 17. a mixture of minerals, water, air, and organic matter
Down
  1. 1. the only type of rock that is NOT produced by either heating or cooling
  2. 2. not consisting of or deriving from living matter.
  3. 3. soil texture is made of large particles and feels gritty or rough
  4. 5. type of soil is made of nearly equal parts of sand, clay and silt
  5. 6. rocks have a mixture of this of minerals
  6. 7. a mineral occurs this way
  7. 10. the most important organisms to the formation of soil
  8. 13. soil texture is smooth and hard when dry but sticky when wet
  9. 14. the decomposed organic matter that forms the very top layer of soil
  10. 15. rocks can contain these, but minerals do not