Soil Science

4. layer leached of clay, minerals, and organic matter, leaving a concentration of sand and silt particles
6. A component of soil that is composed of rock and mineral particles
7. When external stress is applied to soil pushing the soil particles together
8. 30% clay, 40% sand, 30% silt
17. a horizontal section of soil that has different characteristics than sections or horizons above and below it
18. Loose granular material that is composed of particles of weathered or disintegrated rock
19. A mass of rock such as granite, basalt, quartzite, limestone or sandstone that forms the parent material for some soils
20. Looks at the interactions between living organisms and soil
22. The protection of soil from erosion, over usage, salinization, and chemical contamination
23. When synthetic chemicals or other human-made materials are introduced to soil
24. the study of how different types of soils form
25. A type of soil that is composed of a relatively even amount of silt and sand with a smaller amount of clay

1. results in a lack of arable land for agriculture use, including farming and livestock grazing
2. Focuses on the microscopic organisms living in soil
3. The study of the chemical makeup of soil
5. studies soil as it relates to living organisms, particularly plants
9. The deposit at Earth’s surface from which the soil developed
10. layer rich in minerals that leached from the A or E horizons
11. Clay 10%, Sand 85%, Silt 5%
12. The practice of classifying soil types
13. layer made mostly of organic matter such as decomposing leaves
14. studies the physical and chemical properties of soil
15. A component of soil that is composed of clay minerals
16. layer made mostly of minerals from parent material with organic matter
17. The amount of salt in the soil
18. The measure of how acidic or alkaline (basic) a soil is
21. The study of biological organisms in the soil
24. a mixture of organic and inorganic matter that aids in supporting life