Question

# For each pair of terms, explain how the meanings of the terms differ. porosity and permeability

Solution

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Porosity refers to the amount of empty spaces (pores) within a given material (rock). It is defined as the fraction of the volume of pores over the total volume of rock and is usually expressed as a percentage.

Permeability is the capacity of a porous material to allow fluid to flow through it. If the material is permeable (such as gravel), it allows fluid to flow through it, however, if it is impermeable (such as clay), it does not allow fluid to flow through it.

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