Soils

4. Natural soil formation is caused by rock _______. This is where rocks get worn away and turn into tiny sand particles.
5. A substance in which you grow things (ex: soil, water, etc...) is called...
9. Ideal soil needs 50% ____ space and 50% solid materials.
10. In the soil texture triangle, the silt lines run _____.
11. The soil texture triangle helps scientists determine the __ of soil.
12. In the soil texture triangle, the clay lines run ____ or to the right.
14. Soil contains many things such as living ___, worms, bacteria, fungi, and insects.
18. _____ material forms the layers above and is mostly made up of large rocks.
20. There are ____ factors that affect soil formation: Climate, organisms, relief, parent material, and time.
21. This layer is the 2nd from the top layer and is the primary layer where plants grow.
22. Is an example of an organism which may replace the organic material layer which is not always present or found.
23. This layer is the middle (3rd layer from the top)and is reached by deep rooting plants. Mix of bedrock and topsoil.
25. Soil is ____ which means it can grow life.

1. The organic material layer is made up of dead and decaying ____ and twigs and other organic material.
2. Dirt is ____. It cannot sustain life.
3. This layer of soil is comprised (made up of)large rocks.
6. In the soil texture triangle, you can find the sand percent on the ____ of the triangle.
7. It takes 500 ____ to make around 1 inch of topsoil.
8. ____ silt loam is the state soil of Wisconsin.
13. Soil is composed of sand, silt, and _.
15. In the soil texture triangle, you can find the silt percent on the ____ side of the triangle.
16. In the soil texture triangle, the sand lines run ___.
17. These type of scientists use soil layers to determine time and what was happening during that time.
19. In the soil texture triangle, you can find the clay percent on the ____ side of the triangle.
24. ______ material is the top layer of soil.