CS306 Properties of Soils Exercise 5

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CS306 Properties of Soils – Exercise 5

Your assignment: Complete this worksheet to review key concepts from the lesson.

1. Soils are made up of small _______________ particles, _______________ matter, _______________ and _______________ .

2. The mineral particles in soil come from the breakdown of _______________ , while the organic matter is _______________ and _______________ material.

3. The small mineral particles in soils are called _______________ , _______________ and _______________ (listed in order from largest to smallest).

4. Soil _______________ describes the amount and size of spaces between soil particles.

5. The soil _______________ refers to the arrangement and properties of various soil layers. Those layers are also called _______________ .

6. _______________ is the surface or very top layer of soil, also called the _______________ horizon.

7. _______________ is the layer just under the topsoil, also called the _______________ horizon.

8. The _______________ material is the lower soil level from which the topsoil and subsoil have developed. It is also called the _______________ horizon.

9. A pH of 7.0 is _______________ , a pH of less than 7.0 is _______________ and a pH of more than 7.0 is _______________ .

10. Adding peat moss to soil makes it more _______________ , while adding limestone makes soil more _______________ .

11. Soil taxonomy classifies soils into _______________ (number) categories known as _______________ .