Flashcards in Soil Deck (16)
Soil is a mixture of five materials:
The kind of soil in an area depends on:
-the kind of rock
-the area's climate
A layer of soil with properties that differ from those of the layer above or below it.
Accumulation of twigs, leaves, and decomposing plants
Top soil later that contains humus mixed with mineral particles and has darkest color
Has very little material and contains clay and minerals washed down from A horizon. It has a brownish reddish color.
Deepest layer of soil that contains the largest and least weathered rock particles. It is light yellowish brownish in color
Layer of bedrock
Determined by the size of the weathered rock particles it contains
The ability of a soil to provide plant nuetrients
Amount of space between the soil particles
pH level of the water in the soil (how much acid is in the water).
The soil's ability to hold water/moisture.
5 properties of soil:
Texture, fertility, pore space, chemistry, water retention
4 types of mechanical weathering:
Pressure release, plant root growth, ice wedging, and abrasion