Midterm Review

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Across
  1. 1. the small holes and spaces in soil
  2. 4. the hardness or softness of a soil
  3. 6. the crust and the uppermost mantle
  4. 7. the rate at which work is done (work / time)
  5. 10. the shape or steepness of the landscape
  6. 13. combines the element oxygen with other elements or molecules
  7. 14. the process of changing once-living material into dark-colored organic matter
  8. 15. the SI unit for work
  9. 16. all of the organisms that live in a region
  10. 17. the layer of the Earth that is below the crust and above the outer core
  11. 18. an inclined plane wrapped around a cylinder
  12. 19. occurs when water enters cracks in rocks and freezes
Down
  1. 2. the ratio of output work to input work
  2. 3. a mixture of weathered rock, rock fragments, decayed organic matter, water, and air
  3. 5. grinding away rock by friction or impact
  4. 7. a grooved wheel with a rope or a cable wrapped around it
  5. 8. plants use this type of energy from the sun
  6. 9. layers of soil formed from the movement of the products of weathering
  7. 11. a scale that measures the acidity or basicity of a solution
  8. 12. the average weather of an area