Rocks and Soil

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Across
  1. 1. Larger than clay, smaller than sand
  2. 2. These small particles along with water, air, and decayed organic matirial make up the soil
  3. 4. The loose material on the surface of the earth
  4. 6. People who enjoy exploring caves
  5. 8. When the carbon dioxide in the water, a weak acid forms
  6. 9. Forms below Earth's crust by great heat and pressure
  7. 10. Hang from the ceiling and look like stone icicles
  8. 12. Grow up from the ground as a result of the dripping of dissolved calcite
  9. 13. Forms when the sediment and the remains of tiny living things settle and harden
  10. 15. The changing of rock
  11. 16. The second layer of soil
  12. 17. Forms when magma cools below or above Earth's surface
Down
  1. 1. The third layer of soil
  2. 3. Smallest type of particle
  3. 4. Largest type of particle
  4. 5. Combined with sand, silt, and clay
  5. 7. Scientists who study soil
  6. 11. Underneath all the horizons
  7. 14. Soil consists of multiple layers