Soil Formation

3. A type of weathering in which rock is physically broken into smaller pieces.
4. Soil that contains large amounts of calcium carbonate, which makes it very fertile and less acidic than other soils.
5. Mostly made out of sand and clay which is rich in humus.
7. Made of decomposed plants and animals, roots and humus.
8. Determines the weathering processes that occur in a region.
12. cross sections where the layers of soil and bedrock can be seen.
13. Reddish brown in color, made mostly of clay.

1. A type of weathering that breaks down rock through chemical changes.
2. Soil that contains iron and aluminum minerals that do not dissolve easily in water.
6. Layers in soil are called…
9. A mixture of weathered rock particles, organic materials (humus), air, and water.
10. Makes up less than 50% of this in soil’s composition.
11. Come from parent rock, deepest layer.