Across
- 2. The ratio of empty space to solid matter in a material.
- 5. The types of matter and the relative amounts of each type that make up a material, mixture, or pure substance.
- 8. The ability of a material to let a fluid such as water enter or pass through it.
- 11. Rock that is the source of the sediment in a body of soil, or the original rock that undergoes change to become metamorphic rock.
- 12. The movement of water from the surface of the ground into the soil or into permeable rock.
Down
- 1. The top layer of soil, which contains a large amount of humus.
- 3. Decayed plant and animal matter in soil.
- 4. Layers of soil, each of which has characteristics that are different from the neighboring layers' characteristics.
- 6. To observe and check the quality of something.
- 7. The ability of soil to support plant growth.
- 9. A process that removes soil and rock from one location and transports it to a new location. Erosion often occurs by the movement of water, wind, or glaciers.
- 10. A loose mixture of sediment, organic material, water, and air.
