What makes up soil?
Minerals. Air. Water. Organic Matter.
What are the other four major minerals?
Calcium, Phosphorus, Nitrogen, Potassium.
What does the decaying organic matter release?
Nutrients
Soil has layers known as?
Horizons.
What is sheet erosion?
It's the gradual removal of surface soil.
What are the three main types of mineral materials?
Sand, Silt, and Clay
The other four minerals are often added when the soil is being?
Fertilized
Soil that contains nutrients usually looks what color?
Black or dark brown.
What is the O layer?
Organic matter.
What is rill erosion?
What fills in the spaces in between the solid particles?
Water and Air
Based on a scale from 1- 14 what is the most acidic?
1.
What does the color of soil come from?
Minerals and organic matter.
What is the A layer?
Topsoil.
What is gully erosion?
Rills that have become extremely large.
What is the mid size particle mineral in soil?
Silt
Based on a scale from 1- 14 what is the least acidic?
14.
What do brown, red, or yellow indicate about the soil?
Good drainage.
What is the B layer?
Subsoil.
What are sandblows?
Wind picking up soil particles and carrying them away.
What is the largest sized mineral particle in the soil?
Clay
Based on a scale from 1- 14 what is the most neutral level?
7
What do dark brown or olive gray indicate about soil?
High organic matter and very fertile.
What is the C layer?
Bedrock/ parent material.
What is one way to conserve soil?
Plant trees.