Soil Permeability

Select the graph that shows the relationship between porosity and permeability.

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_______________ is the ability of a substance to allow another substance to pass through it, especially the ability of a porous rock, sediment, or soil to transmit fluid through pores and cracks.

• Permeability

• Runoff

• Pores

• Porosity

As permeability increases

• Infiltration decreases and runoff decreases

• Infiltration increases and runoff decreases

• Infiltration decreases and runoff increases

• Infiltration increases and runoff increases

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

What type of sediment tends to be the most impermeable?

• sand

• clay

• silt

• rocks

How does porosity affect permeability?

• Soil has to be porous to be permeable

• No effect

• Some kinds of soil can be porous but NOT permeable

• Soil has to be permeable to be porous

Define permeability

• Water

• Nothing

• Percent of volume of open spaces in rock or sediment

• Ability rock/sediment fluids pass through open spaces/pores

If particle size decreases permeability

• decreases

• increases

• stays the same

• It could increase or decrease

Why does water move slowly through clay or not at all?

• clay has large pore spaces

• clay has hard particles

• clay has very small particles

If particle size decreases, permeability

• decreases

• increases

• remains the same

• will sometime decrease and other times increase

Which soil type is likely to have the highest permeability?

• Clay

• Silt

• Sand

• Loam