What does soil classification help with?
A Determining color
B Identifying moisture content
C Determining texture
D Determining shear strength
What does permeability of soil depend on?
A Soil color
B Particle size
C Soil depth
D Soil type
What is consolidation in soil?
A Shrinkage of soil
B Water movement through soil
C Volume reduction under load
D Increase in soil strength
What does the CBR test evaluate?
A Soil’s resistance to penetration
B Soil permeability
C Soil’s shear strength
D Soil density
Which soil type has the highest plasticity?
A Sand
B Silt
C Clay
D Gravel
What happens to swelling soils when they absorb water?
A They shrink
B They stay the same
C They expand
D They become impermeable
What does effective stress in soils refer to?
A Soil’s resistance to compression
B Total stress minus pore water pressure
C Soil’s shear strength
D Soil’s permeability
What is the main purpose of soil stabilization?
A Increase permeability
B Reduce shrinkage
C Improve soil texture
D Increase soil strength
What does soil-structure interaction study?
A Soil moisture content
B Soil’s plasticity
C Effects of structures on soil behavior
D Soil erosion
What is capillary action in soil?
A Water absorption
B Water movement upward through small pores
C Water retention
D Soil shrinkage
What is the primary effect of soil erosion?
A Increased fertility
B Loss of topsoil
C Increased compaction
D Increased plasticity
What is the function of geotextiles in soil?
A Increase soil density
B Prevent soil erosion
C Increase soil permeability
D Decrease moisture retention
What does soil compaction help improve?
A Soil permeability
B Soil strength and stability
C Soil shrinkage
D Soil shrinkage
What does a triaxial test measure in soil?
A Soil’s permeability
B Soil’s shear strength
C Soil moisture content
D Soil plasticity
What is the main cause of soil liquefaction?
A Excessive moisture content and shaking
B High compaction
C High plasticity
D Low permeability