Soil components
Other minerals and pH levels
Organic matter and soil color
Soil profile
Conservation of soil and soil erosion
100

What makes up soil?

Minerals. Air. Water. Organic Matter.

100

What are the other four major minerals?

Calcium, Phosphorus, Nitrogen, Potassium. 

100

What does the decaying organic matter release?

Nutrients

100

Soil has layers known as?

Horizons.

100

What is sheet erosion?

It's the gradual removal of surface soil.

200

What are the three main types of mineral materials?

Sand, Silt, and Clay

200

The other four minerals are often added when the soil is being?

Fertilized 

200

Soil that contains nutrients usually looks what color?

Black or dark brown.

200

What is the O layer?

Organic matter.

200

What is rill erosion?

Small streamiest that cut into the soil surface by running water.
300

What fills in the spaces in between the solid particles?

Water and Air

300

Based on a scale from 1- 14 what is the most acidic?

1.

300

What does the color of soil come from?

Minerals and organic matter.

300

What is the A layer?

Topsoil.

300

What is gully erosion?

Rills that have become extremely large.

400

What is the mid size particle mineral in soil?

Silt

400

Based on a scale from 1- 14 what is the least acidic?

14.

400

What do brown, red, or yellow indicate about the soil?

Good drainage.

400

What is the B layer?

Subsoil.

400

What are sandblows?

Wind picking up soil particles and carrying them away.

500

What is the largest sized mineral particle in the soil?

Clay

500

Based on a scale from 1- 14 what is the most neutral level?

7

500

What do dark brown or olive gray indicate about soil?

High organic matter and very fertile.

500

What is the C layer?

Bedrock/ parent material.

500

What is one way to conserve soil?

Plant trees.

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