Soil and Rock Properties Quiz

What is the smallest soil particle?

• Gravel

• Clay

• Silt

• Sand

Which term refers to the upper part of the soil profile that is normally cultivated?

• Topsoil

• Mottling

• Subsoil

• Tillagepan

What is the physical property of the soil referring to the relative percentages of sand, silt, and clay?

• Texture

• Consistency

• Composition

• Structure

What is the method of breaking up the compacted layers of the soil that restrict air and water movement and root growth using farm machinery?

• Subsoiling

• Soil Conservation

• Soil Sampling

• Soil Testing

Which type of soil particle is usually made of primary minerals?

• Gravel

• Clay

• Silt

• Sand

What is the term for the spots of color in the soil that indicate internal drainage and aeration?

• Mottling

• Structure

• Texture

• Consistency

Which device is used for the determination of particle size distribution in the laboratory?

• Sieve Analysis

• Hydrometer Analysis

• Cone Penetrometer

• Casagrande Apparatus

What is the ratio of D60 and D10 used to determine the uniformity coefficient of soil?

• D60/D30

• D60/D10

• D30/D10

• D10/D60

What is the term for the natural in situ unit weight of the soil?

• Relative Density

• Dry Unit Weight

• Saturated Unit Weight

• Bulk Unit Weight

Which term is used to measure how densely the grains are packed in a coarse grain soil?

• Density Index

• Void Ratio

• Porosity

• Specific Gravity