Porosity/Permeability/Capillarity

Front

What is porosity?

Back

Porosity is the amount of space between soil particles, which determines how much water or air the soil can hold.

Front

What is permeability?

Back

Permeability is the ability of soil to transmit water and air through its pores.

Front

What is capillarity?

Back

Capillarity is the ability of water to move upward through soil due to surface tension and adhesion to soil particles.

Front

How does particle size affect porosity?

Back

Smaller particles tend to have higher porosity because they create more space between them.

Front

How does particle size affect permeability?

Back

Larger particles generally have higher permeability because they allow water to flow through more easily.

Front

What type of sediment has slow permeability?

Back

Mixed sediments typically have slow permeability due to varying particle sizes and shapes.

Front

What is the relationship between porosity and water retention?

Back

Higher porosity usually means more water can be retained in the soil.

Front

What happens to capillary action in larger soil particles?

Back

Capillary action is weaker in larger soil particles because there is less surface area for water to adhere to.

Front

True or False: If two containers have the same porosity, they must hold the same amount of water.

Back

True, if they are filled to the same level.

Front

What is the effect of soil compaction on porosity?

Back

Soil compaction reduces porosity by decreasing the space between soil particles.