Soil Essay

728 Words Dec 26th, 2015 3 Pages
University of Phoenix Material

Soil and Glaciers Worksheet

From Visualizing Earth Science, by Merali, Z., and Skinner, B. J, 2009, Hoboken, NJ: Wiley. Copyright 2009 by Wiley. Adapted with permission.

Part 1

Size grades of soil are named sand, silt, and clay, which includes colloids. Size grades are defined using the metric system. Use Figure 4.8 from the textbook to fill in the following chart. Specify the type and size and description of the particle. In some cases, particle size will be less than some value or greater than another value. For instance, gravel is greater than 2.0 mm.

|Name |Size |Description |
…show more content…
Describe why these factors are important in the formation of soil.

|Soil forming factor |Importance in soil formation |
|Parent material |Direct impact soil chemisty and fertility rich in solube ions- calcium, magnesium potassium|
| |and sodium. |
|Climate |Precioitation, temperature. Warmer temperature speed up the formation of soil. Cooler |
| |temperature less precipitation slow down soil formation. |
|Living organisms |Plants animals and micro organism all affect soil formation by producing or contributing to|
| |humus production. |
|Topography |water to soak into the regolith |
| |important topographic variable connected with soil is the slope of the land surface |
|Time |longer soil-forming processes, mature soil, |
| | it takes thousands of years

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