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