Soils Review

What is soil made out of

• sand, silt, clay

• Dirt, grass, worms

• rocks, minerals, water

• air, water, decomposing organisms

what is the smallest soil particle

• sand

• silt

• clay

• none of these

Which of the soil particles provides the best drainage to the soil

• sand

• silt

• clay

• bedrock

The soil texture triangle is used for which of the following - select all that apply

• visualize the percentages of components in the soil sample

• help to identify the texture of the soil in the sample

• count the number of particles in the soil

in a soil sample the percentages must all add up to

• 300

• 110

• 200

• 100

define soil profile

• one layer of the soil

• The arrangement of the soil layers in sample

• the layer where all of the soil is combined for testing

• the social media account for a layer of dirt

what is the organic layer of soil composed of (mark all that apply)

• decomposing plants and animals

• live animals and insects

• soil parent material

• living things that carry on life activities

which horizon houses the majority of the plant root zone

• subsoil

• topsoil

• organic zone

• bedrock

What is the name of California's state soil

• the central California soil series

• the San Juaquin Soil Series

• The San Jose Soil Sample

• The San Louis Soil sample

What order do the soil particles settle in (top, middle, bottom)

• sand, clay, silt

• silt, sand, clay

• clay, sand, silt

• clay, silt, sand