Soil Particles
Soil Textures
Vocab
Classifications
Orders
100

Smallest particle size

What is clay?

100

Silky/powdery to the touch.

What is silt?

100

Water entering the soil.

What is infiltration?

100

System used to classify soils.

What is soil taxonomy? 

100

Forest soil that is common to northcentral states. 

What is an alfisol? 

200

0.002mm-0.05mm

What is silt?

200

Equal mixture of sand, clay, and silt.

What is loam?

200

Volume of oven-dry soil.

What is bulk-density?

200

Russian soil scientist who created the system we use today.

Who was V. V. Dokuchaev?

200

Made from volcanic materials.

What is an andisol? 

300

Measurement of area inside a clump of soil. 

What is internal surface area?

300

Particles stick together.

What is clay?

300

Ease of how gases, liquids, and solids can go through a a mass of soil.

What is permeability? 

300

The year the latest soil order was named.

What is 1998?

300

Clay that cracks when it is dry.

What is a vertisol?

400
Has the smallest NUMBER of pores.

What is sand? 

400

Test for texture of soil.

What is a ribbon test? 

400

Water draining through soil.

What is percolation? 

400

66 of these.

What is a suborder?

400

Found in cold climates. High organic matter.

What is a gelisol? 

500

Pores that hold water.

What are micropores? 

500

25% Clay, 30% Silt, and 45% sand.

What is loam?

500

Measure of how much of a soil can hold air and water.

What is total pore space?

500

Soil classifications help figure this out using certain soil properties.

What is land use?

500

Found in northeast US and like cool humid regions.

What is a spodosol?