Soil Prep Session

#5 in the diagram is called?

• eluviation

• bedrock

• regolith

• topsoil

A soil sample was taken and tested from Karen's yard. It was found to be made up of 25% clay, 35% sand, 40% silt. What type of soil does Karen have?

Which of the following is the most correct definition of soil?

• A complex of minerals that provide energy for plant growth

• A complex mixture of organic matter, minerals, and living organisms

• A mass of dead organic matter and detritus; dirt

• An elaborate mixture of organic matter and minerals

A build up of salts in surface soil layers is called

• Irrigation

• Salinization

• Inorganic fertilizers

• Overgrazing

Which of the following are the different particle sizes that determine soil texture?

• loam, mud, sand

• clay, sand, loam

• silt, loam, clay

• clay, silt, sand

_______ is the type of soil used most often with plants. It is a mixture of clay, sand, and silt.

• loam
• humus
• mud
• dirt

Soil sample that is 60% clay, 30% silt, and 10% sand has which texture? 

• clay
• clay loam
• sandy loam
• silt 

Which is the correct order of soil horizons starting at the surface?

• A, B, E,C, O
• O, A, B, C, E
• O, E, A, B, C
• O, A, E, B, C

The rate at which water flows through the soil is called soil percolation or ______.

• Groundwater

• Permeability

• Soil Pores

• Porosity

Which soil component has the least capacity for holding water?

• silt
• clay
• sand
• humus