GEOLOGY

Detailed explanation-1: -Impermeable Material means material that is impenetrable by water and includes building coverage, asphalt, concrete, and brick, stone, and wood that do not have permeable spacing.

Detailed explanation-2: -A material can be both porous and impermeable in situations where it does consist of minute interstices through which liquid or air may pass, but those spaces can get closed up so that the liquid cannot pass through.

Detailed explanation-3: -Igneous or metamorphic rocks have the lowest primary porosity because they commonly form at depth and have interlocking crystals.

Detailed explanation-4: -Permeability is a measure of the degree to which the pore spaces are interconnected, and the size of the interconnections. Low porosity usually results in low permeability, but high porosity does not necessarily imply high permeability.