Composition of Soil
What is the largest (out of the three) particle in soil.
What is sand.
The three soil components that make up soil.
What are sand, silt, and clay.
Forms bedrock weathers and rock breaks up into soil particles.
What is C Horizon
Retains/holds on to water VERY well.
What is heavy clay.
This soil color usually indicates high organic matter content.
What is dark brown or black soil?
This soil component gives soil a gritty feel.
What is sand.
This tool is used by soil scientists to classify soil texture based on the percentages of sand, silt, and clay.
What is the Soil Texture Triangle?
Develops as plants add organic materials to the soil and plant roots weather pieces of rock
What is Horizon A
These organisms can be found in soil. (Name 2)
What is worms and microorganisms.
This soil color often indicates the presence of iron.
What is red soil?
What is the smallest (out of the three) particle in soil.
What is clay.
This line direction on the Soil Texture Triangle is used to determine clay percentage.
What are horizontal lines.
Develops as rainwater washes clay and minerals from the A horizon to be B horizon.
What is Horizon B.
Crumbly, dark brown soil mixed with clay and humus.
What is topsoil.
OR LOAM
This soil color can indicate poor drainage and lack of oxygen in the soil.
What is gray or bluish soil?
The decomposed plants and animals.
What is organic matter.
On the Soil Texture Triangle, sand percentages are read from lines that slope in this direction.
What is downward left to right (diagonal).
Organisms such as snails and beetles feed on decaying organic materials.
What is A Horizon
A layer of soil that differs in color and texture from the layers above and below it.
What is a soil horizon.
Light-colored soils often indicate this soil condition related to organic matter levels are what?
What is low organic matter.
Mixture of rock particles, minerals, decayed organic materials, water, and air
What is the soil.
If a soil has over about 40% clay but also significant sand, it may be classified as this texture class.
What is sandy clay?
What came first, the chicken or the egg?
What is the egg?
What is the chicken?
A soil with high sand content will usually have this drainage characteristic.
What is fast drainage.
This soil color may indicate the presence of organic matter that has partially decomposed.
What is dark brown soil?