Midterm Review

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